Gan Ying's Mission to Daqin: The Frontier Exploration of the Silk Road in "Zizhi Tongjian"

Brief Introduction

Gan Ying, a distinguished diplomat and explorer of the Eastern Han Dynasty, served as a deputy under Ban Chao, the Protector General of the Western Regions. In 97 AD (the 9th year of the Yongyuan era under Emperor He of Han), he was ordered to send a mission to Daqin (the Roman Empire). His deeds are detailed in the Zizhi Tongjian · Han Ji. This mission represents the first recorded attempt in Chinese history to reach Europe directly, marking the pinnacle of the Han Dynasty's external exploration and holding milestone significance in history.

Core Knowledge Points

1. Identity and Background: Gan Ying was Ban Chao's capable assistant, well-versed in the geography and customs of the Western Regions. The background of the mission stemmed from Ban Chao's desire, after managing the Western Regions for over thirty years, to further establish official contact with the great Western power of Daqin and break the trade monopoly.
2. Itinerary and Route: Gan Ying departed from Shule (modern-day Kashgar), passed through various states in the Western Regions, reached Tiaozhi (around the Iranian Plateau), and finally arrived at the "Western Sea" (the coast of the Persian Gulf).
3. Obstacles and Return: By the Persian Gulf, sailors from Anxi (the Parthian Empire) dissuaded Gan Ying, claiming that crossing the sea would take two months and was fraught with diseases. In reality, this was to monopolize trade interests with the Han Dynasty. After weighing the options, Gan Ying decided to return, stopping at the Persian Gulf.
4. Historical Value: Although he did not reach Rome, Gan Ying brought back detailed intelligence on the geography, products, and political landscape of Central and Western Asia. This greatly enriched the Han people's geographical knowledge, and he is later praised as "Ancient China's Marco Polo".

Connection with "Zizhi Tongjian" Content

In Volume 47 of the Zizhi Tongjian, Sima Guang situates Gan Ying's mission during the reign of Emperor He of Han, alongside Ban Chao's achievements in pacifying the Western Regions. This record not only documents the event itself but also deeply reflects the Eastern Han Dynasty's strategic will to manage the Western Regions. The book's description of the Anxi people's detail that they "intended to cut off the Han envoy" reveals the political intent of intermediary monopolies in ancient international trade.

Through this event, Sima Guang showcases the limitations of geographical knowledge at the time: Han people knew of "Daqin", but did not know its exact location, nor the difficulty of sea voyages. Gan Ying's halt objectively defined the limits of the overland Silk Road. This chapter is not only a history of diplomacy but also a witness to the expansion of ancient China's worldview. Through this narrative, Sima Guang emphasizes the critical role of diplomatic envoys in national strategy, while also implying the natural barriers that geographical environments pose to cultural exchange.

Conclusion

Gan Ying's mission to Daqin, though not fully successful, has its courage and spirit of exploration recorded in history. The record in the Zizhi Tongjian allows later generations to glimpse the frontier of Sino-Western cultural exchange two thousand years ago, understanding the efforts and limitations of ancient China in openness and exploration. This historical fragment is indispensable historical material for studying the Silk Road and Han Dynasty diplomacy.