An Shigao
Central Asians played a key role in the transmission of Buddhism to China The first translators of Buddhists scriptures into Chinese were Iranians, including the Parthian An Shigao (c. 148 CE), the Yuezhi Zhi Qian and Kang Sengkai (from Samarkand). Thirty-seven early translators of Buddhist texts are known, and the majority of them have been identified as hailing from the Iranian cultural sphere. The Zoroastrian Sassanian empire (226–651 CE) would eventually rule over many of these regions (such as Parthia and Sogdia), but they tolerated the Buddhist religion.