Shangzayü is a town of Zayü County, in southeastern Tibet Autonomous Region, People's Republic of China, located in a deep river valley 68 km from the county seat and bordering India's Arunachal Pradesh, which is claimed by the PRC, to the south and west. As of 2003, it has a population of 3002, and as of 2011, it has 16 villages under its administration. Wikipedia