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宋 Song · 文 Prose

活板

Movable Type

沈括

Shen Kuo

说明文Expository writing 科技Science and technology 名篇Famous piece

板印书籍，唐人尚未盛为之。
自冯瀛王始印五经，已后典籍皆为板本。
庆历中，有布衣毕昇，又为活板。
其法：用胶泥刻字，薄如钱唇，每字为一印，火烧令坚。

Block-printed books: the Tang did not yet practice this on a large scale. From when Feng the Ying prince first printed the Five Classics, all later classics became block editions. In the Qingli era, a commoner named Bi Sheng made movable type. His method: carve characters in clay, thin as a coin's rim; each character a single type, fired in fire to make it hard.
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Meaning

The passage traces the history of printing from fixed block-printing to Bi Sheng's invention of movable type in the Qingli era. It explains that block-printing was not yet widespread in the Tang, became standard after Feng Dao printed the Five Classics, and was then revolutionized by Bi Sheng's clay types—each character a separate, fire-hardened piece. It is a precise, matter-of-fact record of a world-changing craft.

用雕版印刷书籍，唐朝人还没有大规模采用。自从冯瀛王开始用雕版印刷五经，以后的典籍文献便都是雕版印本了。庆历年间，有个平民出身的毕昇，又发明了活字版。它的方法是：用胶泥刻字，字薄得像铜钱的边缘，每个字制成一个印模，用火烧使它坚硬。

Appreciation

This excerpt is the earliest systematic account of movable-type printing in Chinese literature, taken from Shen Kuo's 'Dream Pool Essays.' It first sketches the historical shift from block to movable type, then opens with 'his method' to explain the process in clear, ordered steps. Its language is exact and economical—'thin as a coin's rim,' 'fired to make it hard'—a model of expository writing that 'states facts directly,' recording a landmark invention with calm objectivity and quiet reverence for a commoner's genius.

【白话串讲】 沈括写《活板》：“板印书籍，唐人尚未盛为之”。“庆历中，有布衣毕昇，又为活板”——平民毕昇发明了活字印刷。“用胶泥刻字，薄如钱唇，每字为一印，火烧令坚”——“若止印三二本，未为简易；若印数十百千本，则极为神速”——他记录印刷术的伟大发明。 【意象与手法】 这是我国最早系统记述活字印刷术的科技说明文：按「板印—活板」的历史顺序展开，再以「其法」领起程序说明，主次分明、条理清晰；语言准确简明，术语精当（「钱唇」「令坚」），是说明文「据实直书」的典范。 【情感与主旨】 文章以冷静客观的笔触记录一项划时代的发明，字里行间流露出对民间工匠智慧（布衣毕昇）的敬重与对科技进步的欣悦，是中国古代科技文明的珍贵实录。 【名句点睛】 「用胶泥刻字，薄如钱唇，每字为一印，火烧令坚」以十二字写尽活字制作的全过程，「钱唇」之喻尤见说明之精切，是历代传诵的科技名句。

Background

'Movable Type' is excerpted from volume 18, 'Crafts,' of Shen Kuo's 'Dream Pool Essays' (Meng Xi Bi Tan), the earliest systematic account of movable-type printing in Chinese literature. Shen Kuo (1031–1095), courtesy name Cun-zhong, from Qiantang (today's Hangzhou, Zhejiang), was an outstanding Northern Song scientist and statesman; he participated in Wang Anshi's reforms and in his late years was exiled to Runzhou (today's Zhenjiang, Jiangsu), where he built the Dream Pool Garden and wrote the Essays. The book, in twenty-six volumes (plus supplements), covers astronomy, geography, mathematics, physics, chemistry, biology, medicine, engineering, literature, history, archaeology, and music, and was praised by Joseph Needham as 'a coordinate in the history of Chinese science.' The movable type recorded here was invented by the commoner Bi Sheng during the Qingli era (1041–1048)—an obscure craftsman whose life is recorded nowhere but in Shen Kuo's note, by which he is remembered. Printing is one of China's greatest gifts to the world: block-printing flourished in the Tang, and was greatly promoted when Feng Dao (Feng the Ying prince) printed the Nine Classics in the Five Dynasties; Bi Sheng, building on block printing, made clay movable type, achieving a fundamental reform—about four hundred years before Gutenberg's metal type. Shen Kuo, a scientist of the time, keenly recorded this folk invention, and his text became a precious first-hand document in the history of printing and world civilization.

《活板》节选自沈括《梦溪笔谈》卷十八《技艺》，是我国最早系统记述活字印刷术的文献。沈括（1031—1095），字存中，钱塘（今浙江杭州）人，北宋杰出的科学家、政治家，嘉祐进士，历仕仁宗、神宗、哲宗三朝，曾参与王安石变法，晚年谪居润州（今江苏镇江），筑梦溪园，倾力著成《梦溪笔谈》。《梦溪笔谈》凡二十六卷（另《补笔谈》《续笔谈》），内容涵盖天文、地理、数学、物理、化学、生物、医药、工程技术、文学、史学、考古、音乐诸门，被李约瑟誉为「中国科学史上的坐标」。本文所记活字印刷术，发明者为北宋庆历年间（1041—1048）的平民毕昇——一个名不见经传的布衣工匠，其生平史籍不载，唯赖沈括此记而名垂青史。印刷术是中华文明对世界最伟大的贡献之一：雕版印刷盛行于唐代，至五代冯道（冯瀛王）主持刻印九经而大为推广；毕昇在雕版基础上创制胶泥活字，实现了排版印刷的根本变革，比德国谷登堡铅活字印刷早约四百年。沈括作为同时代科学家，敏锐地记录了这项民间发明，其文遂成印刷史乃至世界文明史上的第一手珍贵文献。

Art

This text is a scientific expository essay (exposition of principle); its art can be summed as 'orderly sequence, precise language, apt detail.' In structure it follows a clear expository order: first 'block-printed books: the Tang did not yet practice this on a large scale' gives the historical background; then 'from when Feng the Ying prince first printed the Five Classics, all later classics became block editions' writes block-printing's rise; then 'in the Qingli era, a commoner named Bi Sheng made movable type' points to movable type's birth; finally 'his method' introduces the craft procedure—from carving clay characters thin as a coin's rim, to each character a single type, fired to make it hard, step by step, like a butcher dismembering an ox, a model of combined time-sequence and process-sequence exposition. In language it favors judgment and affirmative sentences ('his method,' 'each character a single type'), precise and unambiguous; 'thin as a coin's rim' compares character thinness to a coin's edge, 'make it hard' writes the firing's purpose—terms exact yet plain, so a modern reader can still reconstruct the craft from the text, showing its scientific clarity. In detail it is thorough on the movable-type craft but brief on block history—because the subject is 'movable type,' so new is detailed and old is sketched; the arrangement serves the center. Under a hundred characters yet extremely information-dense, the extreme of expository 'saying much in little.'

此文的文体是科技说明文（事理说明文），其艺术特色可括为「顺序井然、语言精确、详略得宜」三端。就结构言，全文遵循清晰的说明顺序：先以「板印书籍，唐人尚未盛为之」交代印刷术的历史背景，次以「自冯瀛王始印五经，已后典籍皆为板本」写雕版之兴，再以「庆历中，有布衣毕昇，又为活板」点出活版的诞生，最后以「其法」领起，转入制作工艺的程序说明——从胶泥刻字、薄如钱唇，到每字一印、火烧令坚，一步一序，如庖丁解牛般有条不紊，是「时间顺序＋程序顺序」复合说明的范例。就语言言，全文多用判断句与肯定句式（「其法」「每字为一印」），措辞准确无歧义，「薄如钱唇」以铜钱边缘喻字薄之度，「令坚」写烧制之目的，术语精当而通俗，今人读之犹能依文复原工艺，可见说明之科学。就详略言，文章于活板的制作工艺叙述周详，于雕版历史则一笔带过，主次分明——因为本文的说明对象是「活板」，故详于新而略于旧，详略的安排正服务于说明的中心。全文不足百字而信息密度极高，是说明文「以少总多」的极致。

Allusions

The cultural meaning of this text is a condensation of the history of Chinese printing, each detail answering a deep tradition. First, the lineage of printing: block-printing was invented around the Sui-Tang; the Tang used it for sutras and almanacs (the oldest extant block print is the Diamond Sutra), but 'the Tang did not yet practice this on a large scale'—not yet for classics; in the Five Dynasties Feng Dao led the printing of the Nine Classics, the start of official large-scale printing—'all later classics became block editions,' books moving from manuscript to block age, a leap in cultural transmission. Second, the epochal meaning of movable type: block-printing a book required carving the whole board; a great book took years, and the board was waste once printed; movable type makes 'each character a single type,' reusable and re-settable, greatly lowering cost and time—a revolutionary breakthrough. Third, the cultural symbol of 'the commoner Bi Sheng': ancient Chinese craftsmen were lowly, their names mostly lost; only Bi Sheng, by Shen Kuo's five words 'a commoner named Bi Sheng,' is remembered through the ages—'commoner' both marks his common status and implies praise of folk wisdom, akin to Zhuangzi's 'the Way is in the tiles.' Fourth, printing's world influence: movable type spread west via the Silk Road and importantly propelled the Renaissance and early modern European civilization—among the Four Great Inventions, one of the most far-reaching.

此文的文化内涵，是中华印刷文明发展史的浓缩，其每一个细节都对应深厚的文化传统。其一是印刷术的演进谱系：雕版印刷发明于隋唐之际，唐代已用于佛经、历书（如现存最早的雕版印刷品《金刚经》），但「唐人尚未盛为之」——尚未大规模用于典籍；五代冯道主持雕印九经，是官方大规模印书之始，「已后典籍皆为板本」，从此书籍由抄本时代进入板本时代，这是中华文化传播史上的一次飞跃。其二是活字印刷的划时代意义：雕版印一书需刻全板，一部大书刻板数年，且板成书出便成废材；活字则「每字为一印」，字可复用、版可重排，印刷成本与周期大为降低，是印刷技术的革命性突破。其三是「布衣毕昇」的文化符号意义：中国古代工匠地位卑微，姓名多湮没无闻，唯毕昇因沈括「有布衣毕昇」五字之记而名传千古——「布衣」二字既点明其平民身份，又暗含对民间智慧的礼赞，与《庄子》「道在瓦甓」的民间技艺观一脉相通。其四是印刷术的世界影响：活字印刷经丝绸之路西传，对文艺复兴与欧洲近代文明的兴起有重要推动作用，是「四大发明」中影响最深远者之一。

Commentary

The documentary and civilizational value of 'Movable Type' is rare among ancient Chinese scientific texts. In documentary status, it is the unique, first-hand written record of Bi Sheng's clay movable type—Bi Sheng's life and deed are found nowhere but the 'Dream Pool Essays'; without this text, humanity would never know the inventor of movable type was a Northern Song commoner, so printing historians take Shen Kuo's note as the 'birth certificate' of Chinese movable type. In scientific value, lines like 'thin as a coin's rim,' 'fired to make it hard,' 'each character a single type' precisely record the material (clay), shape (thin as a coin's rim), craft (firing), and principle (one type per character, settable and detachable) of type-making; its technical route continued in wood, bronze, and lead type, proving Bi Sheng's invention already contained all core elements of movable printing. In cultural value, the text shows ancient Chinese intellectuals' cherishing of folk invention—Shen Kuo recorded a commoner's creation with a scientist's eye, breaking the traditional bias of 'valuing the Way, slighting the implement,' consistent with the Essays' recording of the compass, water-float method, and cascade-accumulation technique. In influence, this excerpt is required reading in middle-school Chinese, the first lesson for every Chinese student to know the 'Four Great Inventions'; short as it is, it carries one of Chinese civilization's greatest gifts to the world.

《活板》的文献价值与文明价值，在中国古代科技文献中罕有其匹。就文献地位言，它是关于毕昇胶泥活字印刷术的唯一的、第一手的文字记载——毕昇其人其事，除《梦溪笔谈》外别无所考，若无此文，人类将永远不知道活字印刷的首创者是北宋一位平民；故印刷史研究者皆以沈括此记为中国活字印刷术的「出生证明」。就科学价值言，文中「薄如钱唇」「火烧令坚」「每字为一印」等记述，精确记录了活字制作的材料（胶泥）、形状（薄如钱唇）、工艺（火烧）与原理（一印一字、可排可拆），其技术路线在后世的木活字、铜活字、铅活字中一脉相承，证明毕昇的发明已包含活字印刷的全部核心要素。就文化价值言，此文体现了中国古代知识分子对民间科技发明的珍视——沈括以科学家的眼光记录布衣工匠的创造，打破了「重道轻器」的传统偏见，与《梦溪笔谈》记载指南针、水浮法、隙积术等科技成就的精神一致。就影响言，此节选是中学语文教材的必选篇目，是每一代中国学生认识「四大发明」的第一课，其文字虽短，承载的却是中华文明对世界文明最伟大的贡献之一。

Prosody

Form Note-style scientific expository prose (prose narration)笔记体科技说明文（散体记述）
Rhyme Does not rhyme; it narrates and explains in prose sentences, regulating rhythm through the alternation of neat and loose syntax. The whole favors four- and five-character short sentences ('block-printed books,' 'each character a single type,' 'fired to make it hard'), occasionally six- or seven-character long ones ('from when Feng the Ying prince first printed the Five Classics'); the dense short sentences give a tight rhythm, like craft steps locking one to the next—crisp and clean, suiting the expository requirement of 'analyzing point by point.'不押韵，以散句记事说明，靠句式的整散变化调节节奏。全文以四字、五字短句为主（「板印书籍」「每字为一印」「火烧令坚」），偶用六字、七字长句（「自冯瀛王始印五经」），短句密而节奏紧，如工艺程序般一扣一合，读来干脆利落，正合说明文「条分缕析」的文体要求。
Tone pattern The syntax is mainly declarative and judgmental, the tone plain, objective, beyond dispute: 'his method' introduces the procedure with a colon, as solemn as a technical manual; 'each character a single type' and 'fired to make it hard' are affirmative, decisive and sure; the whole uses no exclamation, adds no argument, its calm tone like an instrument's scale—exactly the voice of scientific exposition 'speaking with facts.'句式以陈述句与判断句为主，语气平实客观、不容置疑：「其法」以冒号领起程序说明，如技术手册般郑重；「每字为一印」「火烧令坚」皆以肯定句式写出，斩截而有定见；全文不用感叹、不加议论，语调冷静如仪器刻度，恰是科技说明文「以事实说话」的声口。
Reading note As note-style exposition, the acoustic beauty of this text lies not in tonal harmony but in 'the syntax rhythm mirroring the explanatory content.' 'Block-printed books: the Tang did not yet practice this on a large scale' opens with four characters, followed by nine—one short one long, like a historian opening a scroll, first setting the situation; 'from when Feng the Ying prince first printed the Five Classics, all later classics became block editions' two nine-character lines, structure neat, like boards set in rows, reading the momentum of block-printing spreading everywhere—the formal neatness echoing 'all became block editions' in comprehensive adoption. To 'in the Qingli era, a commoner named Bi Sheng made movable type'—'in the Qingli era' pauses three characters, like a dating brush opening; 'a commoner named Bi Sheng' pauses five, solemnly introducing the figure; 'made movable type' closes four, decisive—three beats like three drum taps, knocking Bi Sheng's invention to the ground with force. The last 'his method: carve characters in clay, thin as a coin's rim, each character a single type, fired to make it hard' is the rhythm's essence: 'his method' two characters leads, like a technician spreading the drawing; then four four-character clauses ('carve characters in clay,' 'thin as a coin's rim,' 'each character a single type,' 'fired to make it hard') fall in a string, each equal length, step locking step, exactly like four craft steps completed in turn—the dense rhythm answering the dense craft; the final 'make it hard' two characters close, abrupt as firing done and the cast set. This design of 'using sentence beat to mimic craft flow' makes even a purely objective expository text ring with sound—a model where note-style prose unites 'literary breath' and 'literary reason.'作为笔记体说明文，此文的音韵之美不在声调和谐，而在「句式节奏与说明内容的同构」。「板印书籍，唐人尚未盛为之」以四字领起、九字承之，一短一长，如史家开卷，先定大局；「自冯瀛王始印五经，已后典籍皆为板本」两句皆九字上下，结构整饬，如刻板成行，读出雕版印书铺天盖地而来的气势——形式的齐整正呼应「皆为板本」的全面普及。至「庆历中，有布衣毕昇，又为活板」，「庆历中」三字一顿，如年代记开笔；「有布衣毕昇」五字再顿，郑重推出人物；「又为活板」四字收束，斩钉截铁，三个句读如三记鼓点，把毕昇发明活板的重大事件敲得掷地有声。末句「其法：用胶泥刻字，薄如钱唇，每字为一印，火烧令坚」更是节奏的精华：「其法」二字领起，如技术员摊开图纸；随后四个四字句（「用胶泥刻字」「薄如钱唇」「每字为一印」「火烧令坚」）连珠而下，句句等长、步步相衔，恰如四道工序依次完成，节奏之密正应工艺之密；句末「令坚」二字收音，戛然而止，如焙烧完成、铸件定型。这种「以句子的节拍模拟工艺的流程」的音韵设计，使一篇纯客观的说明文读来也铿然有声，是笔记体散文「文气」与「文理」合一的典范。

Line by line

板印书籍，唐人尚未盛为之。自冯瀛王始印五经，已后典籍皆为板本。

Block-printed books: the Tang did not yet practice this on a large scale. From when Feng the Ying prince first printed the Five Classics, all later classics became block editions. (These two sentences open the text, using the historical axis to lay out printing's development and set the stage for movable type. 'The Tang did not yet practice this on a large scale' first states block-printing's early state—it existed in the Tang but 'not yet on a large scale,' a 'large scale' that both shows Tang block-printing's limits (mainly for sutras and almanacs, not yet classics) and hints room for growth; 'from when Feng the Ying prince first printed the Five Classics' points the turning point—Feng Dao (posthumously Ying prince of the Later Zhou) led printing the Nine Classics, the start of official large-scale sutra-printing; 'all later classics became block editions' with 'all' writes the later spread—from then classics moved from manuscript to block, a new era of book copying and transmission. From 'not yet large' to 'all block editions,' one lowering one raising, it sketches block-printing's rise, letting the reader see movable type arose upon block-printing's achievement.)

用雕版印刷书籍，唐朝人还没有大规模地这样做。自从冯瀛王开始用雕版印刷五经，以后的经典书籍便都是雕版印本了。

Block-printed books — the Tang people had not yet practiced it on a large scale. Since Prince Feng of Ying first printed the Five Classics, all books of the canon have been block editions.

此两句是全文的起笔，以历史的纵轴交代印刷术的发展脉络，为活板的出现铺设背景。「板印书籍，唐人尚未盛为之」先总提雕版印刷的早期状况：雕版在唐代虽已用于印书，却「尚未盛为之」——一个「盛」字，既见唐代雕版印书之有限（多用于佛经、历书，尚未普及于典籍），又暗示雕版技术尚有广阔的发展空间；「自冯瀛王始印五经」点出转折点，冯瀛王即五代冯道（后周时封瀛王），他主持刻印九经（五经为儒家经典之代表），是官方大规模印经之始；「已后典籍皆为板本」以「皆」字写其后的普及——自此典籍由抄本转为板本，书籍的复制与传播进入新纪元。两句由「未盛」到「皆板本」，一抑一扬，清晰地勾勒出雕版印刷由萌芽到鼎盛的历史进程，也让读者明白：活字印刷正是站在雕版的成就之上应运而生的。

These two lines are the opening of the text, setting the development of printing on the historical axis, the background for the movable block. Block-printed books — the Tang people had not yet practiced it on a large scale first states the early state of block printing: the block already used in Tang for books, and yet not on a large scale — the one word large showing both the Tang block printing's limits (mostly sutras and almanacs, not yet extended to the canon) and the broad room for the block's development; since Prince Feng of Ying first printed the Five Classics names the turning point, Prince Feng of Ying being Feng Dao of the Five Dynasties, Prince of Ying under Later Zhou, who oversaw the carving of the nine classics (the Five Classics as the representative of the Confucian canon), the official beginning of large-scale sutra printing; all books of the canon have been block editions writes the spread after, the word all naming it — henceforth the canon turned from manuscript to block, the copying and spreading of books entering a new era. The two lines, from not large to all block editions, one press one lift, tracing clearly the block printing's rise from germination to splendor, and letting the reader understand: movable type arose precisely on the block's achievement.

庆历中，有布衣毕昇，又为活板。

In the Qingli era, a commoner named Bi Sheng made movable type. (This is the text's hinge, twelve characters pointing to the inventor and time of movable type, every word weighted. 'In the Qingli era' sets the time—Emperor Renzong's Qingli (1041–1048), a time of Northern Song cultural and technological flowering; 'a commoner named Bi Sheng' five characters especially shows craft—'commoner' marks Bi Sheng's common status, not an official or literatus but an ordinary craftsman, exactly what is most unique and moving about him in Chinese science history, and the most valuable documentary spirit of Shen Kuo's note: judging invention by fact, not status; 'made movable type' with 'made' confirms his founding achievement—'made' gently lifts a world-changing invention, calm in tone yet weighty as a thousand jun. The whole sentence, no flourish, no argument, records the greatest event in the plainest brush—exactly Shen Kuo the scientist's documentary manner: the inventor's merit lies in his text.)

庆历年间，有个平民出身的毕昇，又发明了活字版这种新的印刷方法。

In the Qingli reign, a commoner named Bi Sheng created, in addition, the movable-type block.

此句是全文的枢纽，以十二个字点出活字印刷术的发明者与发明时间，字字有分量。「庆历中」点明时间——宋仁宗庆历年间（1041—1048），正值北宋文化科技蓬勃发展的时代；「有布衣毕昇」五个字尤见匠心：「布衣」点明毕昇的平民身份——他不是官员、不是士大夫，只是一个普通工匠，这正是毕昇在中国科学史上最独特也最动人的地方，也是沈括此记最可贵的实录精神：不以身份论发明，而以事实传其人；「又为活板」的「又」字承上启下，既表明活板是在雕版基础上的再创造，又暗含对毕昇首创之功的确认——「为」即创制，「又为活板」三字，把一个划时代的发明轻轻托出，语气平静而分量千钧。全句不事铺陈、不加议论，唯以最朴素的笔法记录最伟大的事件，正是沈括作为科学家的实录笔法：发明者之功，自在其文。

This line is the hinge of the whole text, twelve characters naming the inventor and the time, every word weighted. In the Qingli reign names the time — the Qingli era of Emperor Renzong of Song (1041–1048), the age when Northern Song culture and science flourished; a commoner named Bi Sheng five characters showing the craft: the commoner names Bi Sheng's low birth — not an official, not a scholar, only an ordinary artisan, precisely the most unique and moving part of Bi Sheng's place in Chinese science, and the most precious part of Shen Kuo's record: judging no invention by station, transmitting the man by fact; in addition, the movable block: the word in addition inherits above and opens below, showing movable type as the re-creation on the block's basis, and confirming Bi Sheng's originality — the word created, the three words in addition the movable block, setting an epoch-making invention down lightly, the tone calm and the weight a thousand jun. The whole line, no adornment, no argument, only the plainest brush recording the greatest event, precisely Shen Kuo's record brush as a scientist: the inventor's achievement lies in his own text.

其法：用胶泥刻字，薄如钱唇，每字为一印，火烧令坚。

His method: carve characters in clay, thin as a coin's rim; each character a single type, fired in fire to make it hard. (This is the core of the exposition, twenty-four characters completely recording the four steps of type-making, a classic text in printing history. 'Carve characters in clay' writes the material and first step—clay as the blank, carved with a knife; clay is flexible and easy to get, a material an ordinary craftsman could master; 'thin as a coin's rim' writes the type's shape—thin as a coin's edge, saving material and aiding setting; the 'coin's rim' simile takes a daily thing as comparison, turning the abstract into the concrete, a model of expository 'analogical explanation'; 'each character a single type' writes the core principle of movable type—one type per character, each independent, exactly the root of 'movable': types can be taken singly, re-set, reused, essentially different from the 'dead' whole-board carving of block printing; 'fired in fire to make it hard' writes the last key step—firing to harden the clay so it endures repeated printing, 'make' pointing the firing's purposiveness. The four clauses lock one to the next, from material and shape to forming and hardening, complete in procedure and precise in language; any later study of Bi Sheng's craft takes this as first-hand evidence.)

它的方法是：用胶泥刻字，字薄得像铜钱的边缘，每个字做成一个印，用火烧使它坚硬。

His method: carve characters in clay, as thin as the edge of a coin, each character one stamp, baked in fire to make it hard.

此句是全文说明的核心，以二十四字完整记录活字制作的四道工序，是印刷史上的经典文字。「用胶泥刻字」写材料与第一步——取胶泥为坯，以刀刻字，胶泥质地柔韧、取材易得，是平民工匠能够驾驭的材料；「薄如钱唇」写字的形制——字身薄如铜钱边缘，既省材料又便于排印，「钱唇」之喻取日常之物为比，化抽象为具体，是说明文「譬喻说明」的典范；「每字为一印」写活字的核心原理——一字一印，各自独立，正是「活」字的根本：字可单取、可重排、可复用，与雕版整板刻印的「死」形成本质区别；「火烧令坚」写最后的关键工序——以火烧制使胶泥硬化，方能耐用耐印，一个「令」字点出烧制的目的性。四句一环扣一环，从选材、制形到成型、硬化，程序完整、语言精确，后世任何关于毕昇活字工艺的研究，皆以此为第一手依据。

This line is the explanatory core of the text, twenty-four characters recording the four processes of the movable type, the classic passage in printing history. Carve characters in clay writes the material and the first step — the clay as the blank, the knife for the carving, the clay's pliability and easy source, the material the common artisan could command; as thin as the edge of a coin writes the type's shape — the body thin as the coin's rim, saving material and easing the typesetting, the coin-rim comparison taking the daily object for the analogy, turning the abstract to the concrete, the model of the expository simile; each character one stamp writes the core principle of movable type — one character one stamp, each independent, precisely the root of the living: characters taken singly, rearranged, reused, the essential difference from the block's whole-plate dead carving; baked in fire to make it hard writes the final key process — the firing to harden the clay, durable for printing, the word make naming the purpose of the firing. Four phrases linked ring on ring, from the choosing of material to the shaping to the forming to the hardening, the process complete, the language exact, and every later study of Bi Sheng's craft takes this passage as the first-hand evidence.

Study

Word focus

盛 Large-scale / flourishing. (In 'the Tang did not yet practice this on a large scale,' 'large-scale' is the first weighty word of the text. It modifies 'practice this' (block-printing), writing the Tang's limited adoption. Its merit: one word fixes history—Tang block-printing existed (the oldest extant is the Tang Diamond Sutra) but was mainly for sutras, almanacs, character books, while Confucian classics and scholarly works still circulated as manuscripts, so 'not yet on a large scale' accurately sums this stage; one word sets a measure—'large-scale' foreshadows the later 'all became block editions': from 'not yet' to 'flourishing,' block-printing's trajectory appears in one word's change; one word shows restraint—'did not yet' gently writes 'not flourishing,' neither erasing Tang achievement nor hiding its limit, rigorously phrased, exactly the scientist's plain, factual manner. One 'large-scale' is both historical summary and rhetorical hinge, showing Shen Kuo's diction.) 「唐人尚未盛为之」之「盛」字，是全文第一处见笔力的字眼。「盛」训为「盛行、大规模地」，此处修饰「为之」（做这件事，即雕版印书），写唐代雕版印书的普及程度尚不充分。其妙有三：其一，一字定史实——唐代雕版印刷虽已发明（现存最早的雕版印品即是唐刻《金刚经》），但主要用于佛经、历书、字书等实用之册，儒家经典与学术典籍仍以抄本流传，「尚未盛为之」准确地概括了这一历史阶段；其二，一字立标尺——「盛」字为后文的「皆为板本」预设了对照：由「未盛」到「盛」，雕版印书的发展轨迹在一个字的变化中呈现出来；其三，一字见分寸——「尚未」二字更以委婉的语气写「未盛」，既不抹杀唐代的雕版成就，又如实指出其局限，措辞严谨，正是科学家如实直书的本色。一个「盛」字，既是历史的概括，又是文气的枢纽，可见沈括炼字之精。
钱唇 Coin's rim. (In 'thin as a coin's rim,' these two characters are the text's most exquisite simile and a model of expository 'explaining the deep through the shallow.' 'Coin's rim' is the raised ring at a coin's edge, about half the coin's thickness, very thin and neat; Shen Kuo uses it to compare the type's thickness, turning 'how thin' into a visible, sensible daily object—the reader need never have seen type, only imagine a coin's edge, to picture the thinness. Its merit: the 'coin's rim' simile covers both 'thin' and 'even'—a coin's edge is evenly thin, implying the types are uniform in thickness so they set flat, a simile writing not only 'thin' but 'even,' showing the scientist's precision; it takes a common thing as comparison, turning professional term into everyday language, so an ordinary reader understands at once, exactly the expository pursuit of 'plain in language, deep in reach'; 'coin's rim' is a Song common phrase, plain and kindly, with no showiness, one with the text's factual style. One simile shows Shen Kuo's double skill of entering science's minute detail and emerging in everyday language.) 「薄如钱唇」之「钱唇」二字，是全文最精妙的比喻，也是说明文「以浅喻深」的典范。「钱唇」即铜钱边缘隆起的一圈，其厚度约为铜钱整体厚度之半、十分薄巧，沈括以之比活字字身的厚度，把「薄到什么程度」这一抽象标准转化为人人可见可感的日常物象——读者不必见过活字，只须想到铜钱的边缘，便能准确想象字身之薄。其妙有三：其一，「钱唇」之喻兼顾「薄」与「均」——铜钱边缘厚薄均匀，喻活字厚薄一致，方可排印平整，比喻不仅写「薄」更写「匀」，极见科学家的精确；其二，取譬于日用之物，化专业术语为生活语言，使普通读者一读即懂，正是说明文「深入浅出」的追求；其三，「钱唇」二字为宋代常语，平实而亲切，毫无炫技之态，与全文据实直书的风格浑然一体。一字之喻，见出沈括既能入乎科学之微、又能出以日常之语的双重功力。
令坚 Make it hard. (In 'fired in fire to make it hard,' these two characters are the precise statement of movable type's last craft step, and the word 'make' especially shows expository rigor. 'Make' means 'cause'; here it writes the firing's purpose—not a random burn, but to 'make' it 'hard,' hardening the clay type so it endures repeated printing. 'Make it hard' contains three scientific meanings: it states the firing's functional aim—clay un-fired is soft and brittle, fired it is hard and durable, 'make' points the craft's purposiveness, showing this is conscious material treatment, not chance burning; it implies control of heat—'make it hard' without 'make it scorch or crack' shows the firing must be just right, a craftsman's experience; it provides the material basis for the later 'each character a single type' reused—'hard' is the key to the type's repeated use. Two characters write the most real craft in the plainest ink, plain yet scientific—a model of expository 'no character neglected.') 「火烧令坚」之「令坚」二字，是活字制作最后一道工序的精确表述，一个「令」字尤见说明的严谨。「令」训为「使」，此处写火烧的目的——不是随意烧一烧，而是「令」其「坚」，即使胶泥字模硬化成型，方能承受反复排印的磨损。「令坚」的表述包含三重科学内涵：其一，写明了烧制的功能指向——胶泥未烧则酥软易碎，烧后则坚致耐用，「令」字点出工艺的目的性，说明这已是有意识的材料处理，而非偶然的火烤；其二，隐含了火候的把握——「令坚」而不言「令焦令裂」，说明烧制须恰到好处，温度与时长皆有讲究，这是工匠经验的结晶；其三，为后文活字「每字为一印」的重复使用提供了物质基础——「坚」字正是活字可反复使用的关键。二字以最简的笔墨写最实的工艺，平实之中见科学精神，是说明文「一字不苟」的典范。

Related Reading

核舟记·版本二 Record of the Peach-Pit Boat (Version II) 魏学洢 · 同为记民间工艺之说明文，一记印刷一记雕刻 Both exposition recording folk craft—one printing, one carving

Wei Xueyi's 'Record of the Peach-Pit Boat' records Wang Shuyuan carving Su Shi's Red Cliff boat from a peach pit, and 'Movable Type' are both famous texts recording folk craft in ancient China; both are expository, both 'record craft.' The difference is in object and manner: 'Movable Type' records a practical technology—the principle and steps of movable printing—with calm, precise, direct-procedure language like a technical file, emphasizing 'transmitting knowledge'; 'Record of the Peach-Pit Boat' records a micro-carving art—the eight windows, thirty-four characters, and five figures on the pit-boat—with delicate, vivid, admiring language like an art appreciation, emphasizing 'transmitting spirit.' One science one art, one practical one aesthetic, they exactly show the two dimensions of ancient Chinese expository writing. The common ground: both hold sincere respect for folk craft wisdom (Bi Sheng, Wang Shuyuan), both precise to every detail (the thinness of the rim, the minuteness of the pit-boat), showing the other side of ancient literati 'valuing the Way yet not slighting the implement'—from Shen Kuo to Wei Xueyi, folk craft was always solemnly written into literary history.

魏学洢《核舟记》记王叔远以桃核雕刻苏轼游赤壁之舟，与《活板》同属中国古代记述民间工艺的名篇，文体皆为说明文，皆以「记工艺」为务。差异在说明对象与笔法：《活板》记的是实用技术——活字印刷术的制作原理与工序，语言冷静精确、直陈程序，如技术档案，重在「传知」；《核舟记》记的是微雕艺术——核舟上八窗、三十四字、五人的精巧布局，语言细腻传神、铺陈赞叹，如工艺鉴赏，重在「传神」。一科学一艺术，一务实一尚美，恰好展示了中国古代说明文的两个向度。相同处在于：二者都怀着对民间工匠智慧（毕昇、王叔远）的由衷敬意，都精确到每一个细节（钱唇之薄、核舟之微），可见中国古代文人「重道不轻器」的另一面——从沈括到魏学洢，民间技艺始终被郑重地写进文学史。

 口技·版本二 Ventriloquism (Version II) 林嗣环 · 同为笔记体写民间技艺，一记印刷一记口技 Both note-style records of folk skill—one printing, one ventriloquism

Lin Sihuan's 'Ventriloquism' records a capital ventriloquist mimicking a fire and rescue with sound, and 'Movable Type' are both famous note-style records of folk skill. The difference in focus: 'Movable Type' emphasizes 'method'—recording the movable-printing process with precise expository language, objective and calm, a scientific record; 'Ventriloquism' emphasizes 'sound'—describing the performance's sound changes ('great shouts,' 'hundreds of voices at once') with elaborate, subjective, heated language, an artistic re-presentation. One writes 'implement' as exposition, one writes 'art' as narration; one lets the reader 'know,' one lets the reader 'wonder.' The common ground: both take 'skill' as subject, both show admiration for the skilled (the commoner Bi Sheng, the ventriloquist), showing the fine tradition of note-style prose faithfully recording folk crafts. Read together they show Chinese note literature's broad embrace of both science and art, utility and aesthetics, and let one compare the fundamental differences between exposition and narration in language, rhythm, and purpose.

林嗣环《口技》记京城善口技者幕中模拟火起救火之声，与《活板》同属笔记体写民间技艺的名篇。差异在写作重心：《活板》重「法」——以精确的说明语言记录活字印刷的工艺流程，客观冷静，是科技实录；《口技》重「声」——以铺陈渲染的语言描绘口技表演的声响变化（「大呼」「百千声齐作」），主观热烈，是艺术再现。一以说明文写「器」，一以记叙文写「艺」；一让读者「知」，一让读者「惊」。相同处在于：二者皆以「技艺」为描写对象，皆表现出对民间技艺者的钦佩（布衣毕昇、善口技者），可见笔记体散文如实记录民间百工的优良传统。合观二文，正可见中国笔记文学兼融科技与艺术、实用与审美的广阔天地，也可比较说明文与记叙文在语言、节奏、目的上的根本差异。

 三峡·版本二 The Three Gorges (Version II) 郦道元 · 同为说明性散文传统，一记地理之胜一记工艺之巧 Both in the expository-prose tradition—one geographical wonder, one craft ingenuity

Li Daoyuan's 'Three Gorges' from the 'Commentary on the Water Classic' records the mountains and waters of the Yangtze's Three Gorges, and 'Movable Type' both belong to the ancient Chinese expository-prose tradition, but with very different subjects: 'Three Gorges' explains geography—with lines like 'seven hundred li of the Three Gorges, the banks continuous mountains, with no gap' writing the mountains' continuity and the water's rush, using both scenic and lyric brush, a 'union of geography and literature'; 'Movable Type' explains craft—with lines like 'carve characters in clay, thin as a coin's rim' writing the movable-type procedure in purely objective brush, a 'marriage of science and letters.' 'Three Gorges' wins by 'literary' beauty, read like walking the mountain road, beauty without end; 'Movable Type' wins by 'real' precision, read like viewing an engineering drawing, meticulous. The two, one writing nature's grandeur, one writing man's ingenuity, form a contrast, together showing the expository-prose tradition from Six Dynasties geographical records to Song scientific notes, and the long tradition and broad capacity of 'exposition' in Chinese prose.

郦道元《三峡》出自《水经注》，记长江三峡的山势水景，与《活板》同属中国古代以「说明」为本的散文传统，而说明对象迥异：《三峡》说明的是地理——以「自三峡七百里中，两岸连山，略无阙处」等句写山之连绵、水之湍急，兼用写景抒情之笔，是「地理学与文学的结合」；《活板》说明的是工艺——以「用胶泥刻字，薄如钱唇」等句写活字制作之程序，纯用客观笔法，是「科学与文字的联姻」。《三峡》之文以「文」胜，读来如行山阴道上、美不胜收；《活板》之文以「实」胜，读来如观工程图纸、一丝不苟。二文一写自然之壮美、一写人工之精巧，恰成对照，共同展示说明性散文从六朝地记到宋代科技笔记的发展轨迹，也可见「说明」一体在中国散文中的悠久传统与广阔容量。