Based on the Tibetan and Chinese documents such as mNgav ris chos vbyung gngs ljongs mdzes rgyn zhes by ba bzhugs so, mNgav ris rgyal rabs, Lo tsa ba rin chen bznag povi rnam thar bzhugs so, and lHa bla ma ye shes vod kyi rnam thar rgyas pa, the article proposes that Ye shes vod's original name was Srong nge, and he was the younger brother of vKhor re, the descendant of bKra shis mgon, the mNgav ris King. He was also known as Khri lde srong gtsug btsan. Ye shes vod was his dharma name after he became a monk. He adopted measures such as promoting Buddhism and suppressing Bon, building temples, inviting Buddhist scholars, and sending young people to ancient India and Kashmir to study Buddhist scriptures and translate Buddhist scriptures, so that Buddhism was fully spread in the mNgav ris region. At the beginning of the late propagation period, Tibetan Buddhism had the characteristics of attaching importance to keeping precepts, giving equal importance to exoteric and esoteric Buddhism, and practicing in sequence. It originated from the Ye shes vod's period, when the Bon religion was still influential, making Buddhism chaotic again. Ye shes vod and others selectively absorbed Buddhist cultural content according to the social needs of the time, and promoted the process of development of Tibetan Buddhism in the Chinese context. The series of religious and cultural exchange activities shown in the upper route's spread of Vinaya are consistent with the path of development of Tibetan Buddhism in the Chinese context.
