This country is too open!The house had no walls and was supported by a few pillars

Anecdote

With the development of society and the progress of civilization,people are more and more aware of protecting their privacy and private property.Now the door even has fingerprint lock,which is safer and more convenient than the key.As a Chinese people influenced by traditional culture,it is almost impossible to go out without locking the door.But the world is so big that there is a country which can be called the most open country in the world.Their houses have no walls,let alone locked the door.How do people bathe in this country?