佛祖統紀 36.70

36.70

The commentary states: Śramaṇas of this land traveling to the west began with Zhu Shixing, yet he only reached Khotan in the Western Regions, which was in fact the territory east of the Pamir River (Conghe). But when it came to Master Faxian, he crossed the Pamir Mountains (Congling) to the west and reached far into the Five Indias, and was further able to take the route across the southern sea to return east to the land of Jin. The diligent quest for the Dharma truly began with this master!