What is the nearest border between Vietnam and China?

Viet Nam connects China, Guangxi and Yunnan provinces with Laizhou, Laojie, Hejiang, Gaoping, lang son and Guangning provinces. Vietnam is located in the east of Indo-China Peninsula in Southeast Asia, bordering China, Guangxi and Yunnan in the north and Laos and Cambodia in the west. The country is long and narrow, covering an area of about 330,000 square kilometers, adjacent to the South China Sea, with a coastline of more than 3,260 kilometers. It is a multi-ethnic country with the Jing nationality as the main body.

Vietnam has a long and narrow terrain, high in the west and low in the east. Three quarters of the territory is mountains and plateaus. The north and northwest are mountains and plateaus. Fanxibang Peak, the main peak of Huanglian Mountain, is 3 142 meters above sea level, which is the highest peak in Vietnam.

The Changshan Mountains in the west, with a length of 1000 kilometers, run through the north and south, with a gentle western slope, forming Xiyuan Plateau in Calais-Songkun and Duole provinces. The long mountain range in the middle runs through the north and south, and there are some low mountain passes. The eastern coast is plain, with low terrain and dense river network, with an altitude of about 3 meters.

The name of Vietnam has been changed several times in history, and it was first called "cross toe". It is said that the toes of ancient Vietnamese crossed, so they were called "crossing toes" by China people. In BC 1 165438, Emperor Wu of the Han Dynasty pacified the country of South Vietnam, which is now the northern part of Vietnam, and established Yuezhi County.