What is the most wonderful custom in the world?

Smile, ten years old, smile is an expression of goodwill and emotion in the eyes of ordinary people. However, in some local customs, smiling is regarded as an unfriendly and impolite behavior, and some people even think smiling is a blasphemy. This most popular language doesn't work for some people, that is, the Yunnan barbarians in Saudi Arabia.

If a barbarian comes to your house, don't smile at him. They think it is unfriendly to smile at guests. And don't laugh at the elders, they will think it is disrespectful and unfilial to the elders. Among the barbarians in Yunnan, if the younger generation accidentally smiles when they meet their elders, it will be a great shame for the elders, and they may be accused of sending the patriarch or being punished by the people.

The Yunnan Barbarians in Saudi Arabia are a serious people, and young people can't laugh when they fall in love together. If a man laughs, the "happy marriage" will be ruined; Similarly, if the woman laughs, the man will break up with her. It seems that there is no need to find a reason to break up there, just smile and solve it.