There are very strict rules here. For example, when you are moving into a new apartment, you have to register yourself in the house within 3 days and read all the rules. For example, in some houses, you can’t take a bath in the evening, and in others — you can’t even flush the toilet. You can’t take a shower after 10 pm and people actually follow this law. When I asked a Swiss man why they had such a law, he said with a serious face, “The water makes noise and prevents the neighbor from sleeping.”