By Petrina Pyle.
Mnga' Ris- Currently named the Ngari Prefecture of the Tibet Autonomous Region in China, which includes an area of Kashmir in dispute with India. This region makes up the region of western Tibet and is at the center of the Changtang Plateau on the northern part of the Qinghai-Tibet Plateau. In the east it is east bordered by the Nagqu Prefecture, and borders India and Nepal in the south and west. The area stretches 600 km from east to west and measures 550 km from north to south, covering a total area of 34,500 square km. It is the birthplace of the Bon religion that declined with the growth of Tibetan Buddhism. In the Blue Annals mentions the spread of the Doctrine and the teaching of the Vinaya into this area when Tsong Kha Pa (1357-1419) and his sons enter the region to rename the king and ordained monks and established the practice of the Vinaya.