Kushan Empire
Contacts with China

During the 1st and 2nd century AD, the Kushan Empire expanded militarily to the north, putting them at the center of the profitable Central Asian commerce. They are related to have collaborated militarily with the Chinese against nomadic incursion, particularly when they allied with the Han dynasty general Ban Chao against the Sogdians in 84, when the latter were trying to support a revolt by the king of Kashgar. Around 85, they also assisted the Chinese general in an attack on Turpan, east of the Tarim Basin.

In recognition for their support to the Chinese, the Kushans requested a Han princess, but were denied, even after they had sent presents to the Chinese court. In retaliation, they marched on Ban Chao in 86 with a force of 70,000, but were defeated by a smaller Chinese force. The Yuezhi retreated and paid tribute to the Chinese Empire during the reign of emperor He of Han (89–106).

The Kushans are again recorded to have sent presents to the Chinese court in 158–159 during the reign of Emperor Huan of Han.

Following these interactions, cultural exchanges further increased, and Kushan Buddhist missionaries, such as Lokaksema, became active in the Chinese capital cities of Luoyang and sometimes Nanjing, where they particularly distinguished themselves by their translation work. They were the first recorded promoters of Hinayana and Mahayana scriptures in China, greatly contributing to the Silk Road transmission of Buddhism.
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