Why do children get sick after traveling? What is the reason?

Of course it has an impact! Never mind the children, or you will regret it. The child is too young. Even in August in Jiuzhai, the temperature difference between morning and evening is very large, and it is easy to catch a cold. Plateau climate can also lead to other complications. The child is so young that he knows nothing about what he saw along the way. In case of illness, adults will also be affected. Why don't you wait until you are older to take the baby out for a trip?