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.
Thạnh Hóa District Thạnh Hóa is a rural district of Long An Province in the Mekong Delta region of Vietnam.