Which borders Vietnam, Hekou Yao Autonomous County or Lhasa City?
Lhasa (prefecture-level city) Lhasa City is a prefecture-level city, formerly a prefecture until 7 January 1960, one of the main administrative divisions of the Tibet Autonomous Region of China. It covers an area of 29274 km2 of rugged and sparsely populated terrain.
Rinbung County Rinbung County (Chinese: 仁布县; Pinyin: Rénbù Xiàn) is a county at the northeastern boundary of Xigazê in the Tibet Autonomous Region.