Which country is Hechi in Guangxi close to?

Hechi in Guangxi is close to Vietnam. According to Baidu map, Hechi City in Guangxi is located in the south of China, near the Vietnamese border, and in the southwest of Guangxi Zhuang Autonomous Region. Its geographical coordinates are 23 21'-25 40' north latitude and106 36'-109 45' east longitude. Hechi city borders Vietnam in the south and west, and borders Vietnam.