Is it better to travel to Thailand or Vietnam?

Vietnam has many beautiful scenery, and it is very close to China. It is more convenient to enter Vietnam from land ports than to go to Thailand. Unfortunately, visas from Vietnam are not as convenient as going to Thailand. Thailand has landing visa, but landing visa is closed to China people. Most of Vietnam's tourism is mainly for sightseeing and vacation. Basically, all tourist cities are near the sea, and the tourism projects are relatively simple. You can travel to Vietnam simply for a change of environment and mood, and the price is not expensive.