After the new house is built, it is taboo to hear that other couples or young men and women have sex in their own homes. I want to know why, what's wrong.

To tell the truth, I'm afraid that my unfamiliar friends will do that in their own homes. However, there is no such taboo for your brothers and sisters and other close relatives and friends.

Some people attach great importance to this, mainly for two reasons: first, there were provisions in this respect in feudal ethics in the past, and some places inherited this tradition. If you look for etiquette teaching before the Republic of China, you can find etiquette rules in this respect. The second is the individual etiquette requirements formed by the combination of religious beliefs and traditional customs. For example, it is just for husband and wife to lie in their own homes, and it is immoral (inappropriate) to commit adultery in other people's homes.

If you are not a layman who is forbidden by lewdness, personally, as long as you are not conniving at other people's promiscuity, this taboo should not conform to the modern situation. Nowadays, young people are relatively emancipated and avant-garde in their ideas. Paying attention to so many taboos is for fear of alienating friends. Therefore, for our relatives and friends, familiar friends, it is best not to artificially set so many so-called preventive measures that are incompatible with modern consciousness.