Why did Ho Chi Minh change from Guangzhou to Vietnam to Chongqing?

Convenient. From Guangzhou to Ho Chi Minh, Vietnam to Chongqing, connecting flights is faster and more convenient. So from Guangzhou to Vietnam, Ho Chi Minh transited Chongqing. Transit refers to the process of arriving at the destination from the starting point through one or more places by means of transportation (bicycles, trains, cars, ships, planes, etc.). ).