What is the nearest city to travel to Vietnam?

The nearest place in China is Pingxiang City, Guangxi Zhuang Autonomous Region. Pingxiang City, a county-level city in Guangxi Zhuang Autonomous Region, is managed by Chongzuo City. It is located in the south of China, bordering on lang son. Known as the "South Gate of the Motherland", China is the closest international city to ASEAN countries. Pingxiang city is about 35 kilometers wide from east to west and 55 kilometers long from north to south. The urban area is 32km away from the capital of Lang Son Province, Vietnam, 176km away from Nanning, the capital of Guangxi, 160km away. Information on expanding the border between China and Vietnam. Ten-story mountain in the west and Beilun estuary in the east, with a total length of 1300 km. After Vietnam became a protectorate of France in 1884, China and France signed a contract from 1885 to 1897. After China and Viet Nam became independent, they were friendly neighbors, comrades and brothers, and they did not raise any objection to the original border line. However, with the support of the Soviet Union, Viet Nam constantly provoked China. According to incomplete statistics, from February 1974 to 1979, there were more than 2,700 border incidents and armed conflicts, which seriously endangered the security of southern Xinjiang. Our border guards were forced to counterattack in self-defense from 1979 in February to 17 in March.