Tripitaka Koreana

• 1. Introduction

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  The Tripitaka Koreana began not with monks at peace but with an empire under assault. In 1011, during the Goryeo-Khitan War, Korean craftsmen started carving Buddhist scripture into wooden blocks not merely to preserve religious texts but to summon divine intervention against an invading army. That first effort took 76 years. Then the Mongols came, and the woodblocks burned.

  What followed was one of the most ambitious acts of cultural reconstruction in human history. A second set of blocks was carved between 1237 and 1249, this time with even greater precision. Robert Buswell Jr., a scholar of Korean Buddhism, compared the scale of that national commitment to the United States Apollo program in the 1960s. The result now sits in four buildings at Haeinsa temple in South Gyeongsang Province, South Korea: 81,352 wooden blocks holding 52,330,152 individual Chinese characters, still in pristine condition more than 750 years later.

  What drove a kingdom to carve the entire Buddhist canon not once but twice? How did those blocks survive when so much else was lost? And why are scholars today still debating what to call it?

• 2. War and the First Canon

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  Work on the first Tripitaka Koreana began in 1011, while Korean forces were still fighting the Khitan. The act of carving was understood as a religious petition. By putting scripture into physical form, the Goryeo court believed they could invoke the Buddha's protection. The project drew on the Kaibao Canon, a Chinese compilation finished in the 10th century, and also consulted the Khitan Tripitaka to catch discrepancies. The finished collection ran to around 6,000 volumes.

  For more than two centuries those blocks held their place. Then Mongol armies pushed into Korea, and in 1232 the original woodblocks were destroyed by fire as the Goryeo capital was forced to relocate to Ganghwa Island. Scattered impressions from the first printing survived, but the blocks themselves were gone. The reason they had been made, a prayer for military salvation, had not been answered.

• 3. The Second Carving

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  King Gojong ordered the project to begin again. Carving started in 1237 and finished 12 years later, supported by Ch'oe U and his son Ch'oe Hang. The Seon and Gyo schools of Korean Buddhism both contributed monks to the effort.

  Thousands of scholars and craftsmen were employed. Every block was carved with 23 lines of text, each line holding 14 characters, giving each double-sided block a total of 644 characters. The consistency of style across all 81,352 blocks convinced some observers that a single person had done all the carving; scholars now estimate a team of 30 men was responsible.

  In 1398, the completed second set of blocks was moved to Haeinsa, where it has remained in four storage buildings ever since. That move turned out to be one of the most consequential decisions in the collection's survival.

• 4. Wood That Outlasted Centuries

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  The blocks were made from birch wood sourced from the southern islands of Korea. Before carving could begin, each piece of wood was soaked in sea water for three years, then cut and boiled in salt water. The blocks were then left in shade and exposed to wind for another three years. After carving, each block was coated in a poisonous lacquer to repel insects and framed with metal to prevent warping.

  Each block measures 24 centimetres in height and 70 centimetres in length. Thickness ranges from 2.6 to 4 centimetres, and each block weighs roughly three to four kilograms. If all 81,352 blocks were stacked, they would reach a height of 2.74 kilometres, nearly as tall as Paektu Mountain. Laid end to end, they would stretch 60 kilometres. Together they weigh 280 tons.

  A modern test showed how fragile that survival really is. When a new depository was built in the early 1970s under the Park Chung Hee regime, a small number of blocks were moved there on a trial basis. Those blocks were damaged almost immediately. They were returned to their original spots, the new building was shut down, and it now serves as a Zen center. Debates about the adequacy of the current storage continue.

• 5. Sugi and the Question of Errors

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  National Preceptor Sugi, the Buddhist monk placed in charge of the second carving, worked from multiple source versions. He compared the Northern Song Chinese edition, the Khitan Tripitaka, and existing Goryeo texts. Content written by respected Korean monks was also added.

  After the project was finished, Sugi published 30 volumes of Additional Records documenting the errors, omissions, and redundancies he had found across those source versions. It is a popular misconception that the Tripitaka Koreana contains no mistakes at all. A survey found that the text does include missing characters and errors. What Sugi's work produced was not a perfect text but a more carefully checked one than had existed before.

  In the 38th year of the reign of King Kojong, which corresponds to 1251, Sugi's comparative corrections were formally collected and recorded in the edition now catalogued as volume 38, text 1402 of the modern edition. That volume remains a resource for scholars tracing how the Tripitaka evolved across different national traditions.

• 6. A Canon the World Reached For

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  During Japan's Edo period, the Tripitaka Koreana was among the most desired objects in Japanese Buddhist circles. Japan never succeeded in producing its own woodblock Tripitaka, and from 1388 onward made repeated requests and attempts to acquire the Korean collection. Since the Muromachi period, 45 complete printings were gifted to Japan.

  That influence extended into modern scholarship. The Japanese Taisho Tripitaka, the standard modern edition used by Buddhist scholars worldwide, was said to have been based on the Korean edition because of how complete the Goryeo text was. Some texts from the Tripitaka Koreana were also used in the Chinese Zhonghua dazangjing, which was itself based on the Jin edition, a sister edition that had originally been sent to Korea.

  The Tripitaka Koreana holds 1,496 titles arranged into 6,568 books across 81,258 pages. That scope is one reason Robert Buswell Jr. has called for the collection to be renamed the Korean Buddhist Canon rather than the Tripitaka Koreana. He argues the current name misleads, because the collection is far larger than the Tripitaka proper and includes travelogues, Sanskrit and Chinese dictionaries, and biographies of monks and nuns.

• 7. Recognition and What Comes Next

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  South Korea designated the Tripitaka Koreana its 32nd National Treasure in 1962. UNESCO inscribed it in the Memory of the World international register in 2007. Haeinsa, the temple that houses the collection, has separately been designated a UNESCO World Heritage Site.

  For most of its history at Haeinsa, the collection was closed to the public, accessible only during Buddhist events or to scholars. In 2021, the doors opened to members of the public who preregister.

  As of 2024, the Cultural Heritage Administration of South Korea expects digitization files to be made publicly available by 2027. The modern printed edition of the canon runs to 47 volumes containing 1,514 texts, a form that puts the Tripitaka Koreana's 52 million characters into a format that does not depend on seven centuries of careful storage to survive.