What do cats think when they travel and are temporarily fostered in other people's homes?

Cats especially don't like a change of environment and will be very unhappy. You'd better invite your friend to your house to feed him, because cats especially don't like changing environments, and sometimes they even have stress reactions, and they don't eat or drink. Every time I go out for a few days, I will invite my neighbors to my house to help me change cat litter and put cat food and cat water. My family is particularly at ease. Cats, friends and neighbors are particularly important, and the owner is unwilling to change the environment.