Vietnam used to be a colony of France for a long time, and France entered from the west of Vietnam. Therefore, French culture has a greater influence in the south of Vietnam, especially towards the west. The famous city in western Vietnam is Saigon, now known as Ho Chi Minh City. During the Vietnam War, the US military also focused on the western city of Saigon as the main rear area to deepen their warfare. At that time, Hanoi was always within the sphere of influence of the Vietnamese Communist Party. Due to the greater influence of the West, Saigon is superior to Hanoi in both urban and planning aspects. Due to the profound influence of the West, Saigon's cultural, geographical, and dietary habits, including cross-cultural thinking, are relatively westernized.