The earliest attempt was in 1624, when several Portuguese missionaries set out from Goa, and they went first to what is now Zhada County in the Ngari region.

• 还有就是像哈萨克族，喜马拉雅山南麓的一些人种进来，所以他们不是特别纯，包括汉族，本身就已经非常之不纯。