Nittō Guhō Junrei Kōki: A Ninth-Century Monk's Epic Journey Across Tang China

Among the great travel records in world literature, the Nittō Guhō Junrei Kōki (入唐求法巡礼行記, "Record of a Pilgrimage to China in Search of the Buddhist Law") holds a place of extraordinary distinction. Written by the Japanese Tendai monk Ennin (円仁, 794–864), this four-volume diary chronicles nearly a decade of perilous travel, devoted study, and courageous survival across the vast expanse of Tang Dynasty China. Now preserved in its oldest surviving manuscript copy — transcribed by the monk Kanetane (兼胤) in 1291 — this work is designated as a National Treasure of Japan, a testament to its irreplaceable value for understanding both East Asian Buddhist history and the realities of ninth-century Chinese civilization.

Ennin: The Monk Who Defied the Odds

Ennin, posthumously honored as Jikaku Daishi (慈覚大師, "Great Master of Compassionate Enlightenment"), was born in 794 in Shimotsuke Province (present-day Tochigi Prefecture). At the age of fifteen, he ascended Mount Hiei to study under Saichō (最澄), the founder of the Japanese Tendai school of Buddhism. Ennin proved to be a brilliant disciple and eventually became the third Chief Abbot (zasu) of Enryaku-ji, the head temple of the Tendai school.

In 838, at the age of forty-two, Ennin joined the last official Japanese embassy to Tang China as a short-term study monk (shōyaku-sō). His mission was to deepen his understanding of Tendai esoteric Buddhism (Taimitsu), which Saichō had only begun to transmit to Japan. What was planned as a brief sojourn turned into an extraordinary odyssey lasting nearly ten years — from 838 to 847 — filled with danger, discovery, and unwavering determination.

The Journey: Across Seven Provinces of Tang China

The diary opens with Ennin's departure from Hakata Bay in 838 aboard one of the embassy ships bound for China. After a harrowing sea crossing, he arrived on the coast of Jiangsu Province. When his request to travel to Mount Tiantai — the birthplace of the Tendai tradition in China — was denied by Tang officials, Ennin made a fateful decision. Rather than return to Japan with the embassy, he secretly remained behind, effectively becoming an undocumented traveler in a foreign empire.

From this point on, Ennin's diary reads like an adventure of remarkable scope. He traveled through seven provinces of northern and eastern China, including Jiangsu, Shandong, Hebei, and Shanxi. He made a celebrated pilgrimage to Mount Wutai (五台山), one of the holiest sites in Chinese Buddhism, sacred to the bodhisattva Mañjuśrī. There he studied under distinguished masters and absorbed teachings on Tendai doctrine and the practice of chanting Amitabha Buddha's name.

Eventually Ennin reached Chang'an, the magnificent Tang capital and one of the greatest cities in the medieval world. He studied esoteric Buddhism at major temples including Daxingshan-si and Qinglong-si, receiving initiations in both the Vajradhātu (Diamond Realm) and Garbhadhātu (Womb Realm) mandalas — the very practices that would become central to Japanese Tendai esoteric tradition.

Witness to History: The Huichang Persecution of Buddhism

The most dramatic chapters of the diary describe Ennin's firsthand experience of the Huichang Suppression of Buddhism (会昌の廃仏, 842–845), one of the most devastating religious persecutions in Chinese history. Emperor Wuzong, a devout Taoist, ordered the destruction of Buddhist monasteries, the forced return of monks and nuns to secular life, and the confiscation of temple wealth. Ennin recorded the unfolding catastrophe in vivid detail: temples demolished, sacred images melted down, monks and nuns scattered.

As a foreign monk, Ennin was caught in this upheaval. He was eventually ordered to return to lay status and leave China. Despite these dangers, he managed to protect a remarkable collection of 423 Buddhist texts totaling 559 volumes, along with mandalas, relics, and ritual implements. His eyewitness account of the persecution remains one of the most authoritative sources on this pivotal event in Chinese religious history.

Why This Work is Designated as a National Treasure

The Nittō Guhō Junrei Kōki is valued for several reasons that elevate it far beyond the status of a simple travel diary.

First, it is an unparalleled primary source for Tang Dynasty history. The diary records details of daily life, customs, official procedures, transportation networks, food prices, festivals, and social interactions that are found nowhere in Chinese official histories. For scholars of ninth-century China, this document is indispensable.

Second, the diary provides the most detailed contemporary account of the Huichang Persecution, making it a critical resource for understanding the relationship between religion and state power in medieval China.

Third, it is a masterpiece of early Japanese literary travel writing. Renowned scholar and former U.S. Ambassador to Japan Edwin O. Reischauer translated the diary into English in 1955, bringing it to international attention. He considered it comparable in historical value to Marco Polo's Travels and Xuanzang's Great Tang Records on the Western Regions. Together, these three works are sometimes referred to as the "Three Great Travel Records of Asia."

Fourth, the National Treasure manuscript itself — the copy made by the monk Kanetane in 1291 — is the oldest surviving version of the text. Ennin's original manuscript has been lost, making this Kamakura-period transcription irreplaceable. The manuscript was formerly held at the Kanchi-in sub-temple of Tō-ji in Kyoto before passing into private hands, and was designated a National Treasure on November 22, 1952.

The Manuscript: A Seventy-Two-Year-Old Monk's Labor of Devotion

The manuscript consists of four booklets (四帖) transcribed by Kanetane, a monk of Chōraku-ji temple in the Gion district of Kyoto. An inscription at the end of the manuscript records the date of completion as the twenty-sixth day of the tenth month of the fourth year of Shōō (正応4年, 1291).

What makes this manuscript especially poignant is that Kanetane was seventy-two years old when he completed this painstaking work. In an era long before reading glasses, the elderly monk labored to preserve Ennin's diary for future generations. The result is a manuscript with some characters that are difficult to decipher — the natural consequences of advanced age and failing eyesight. Among the many polished and meticulously copied National Treasures of Japan, this manuscript stands apart precisely because of its human imperfection, a moving reminder of one monk's devotion to preserving Buddhist heritage.

Highlights and Points of Interest

While the manuscript is held in private ownership and only occasionally displayed at public exhibitions, there are several ways for visitors to engage with the world of Ennin and his diary.

The Kyoto National Museum has exhibited portions of the manuscript during special exhibitions, most recently in connection with the exhibition "Saichō and the Tendai Sect" and other thematic displays. Checking the museum's exhibition schedule is recommended for those hoping to see this National Treasure firsthand.

Visitors interested in Ennin's legacy can also explore related sites across Japan, many of which trace the monk's remarkable influence on Japanese Buddhism. Mount Hiei and Enryaku-ji in Shiga Prefecture remain the spiritual center of the Tendai school. Yamadera (Risshaku-ji) in Yamagata Prefecture and Chūson-ji in Hiraizumi, Iwate Prefecture, are among the many temples tradition credits Ennin with founding or reviving. Even the celebrated Sensō-ji temple in Asakusa, Tokyo, counts Ennin as a key figure in its history.

Surrounding Area and Related Cultural Properties

Because the manuscript is privately owned by Andō Sekisan Gōshi Kaisha, a company based in Gifu Prefecture, it does not have a permanent public exhibition site. However, it has been exhibited at major national museums, and Gifu Prefecture itself offers many cultural treasures worth exploring.

For visitors to Kyoto, where the manuscript has most often been displayed, the Tō-ji temple complex — the original home of the Kanchi-in sub-temple that once held this manuscript — is a UNESCO World Heritage Site with a magnificent five-story pagoda and a hall filled with esoteric Buddhist sculptures. The broader Kyoto cultural landscape provides rich context for understanding the Tendai and Shingon Buddhist traditions that shaped Ennin's world.

Visitors to Tochigi Prefecture can explore the birthplace of Ennin in the Iwafune area of Tochigi City, where a large statue and historical monuments mark the site where this great monk began his life's journey.