In ancient times, men and women were not close to each other in giving and receiving, which meant that men and women should maintain certain etiquette and not make abnormal behaviors when communicating. Holding hands like now is actually an act of giving and receiving between men and women in the past.

So in ancient times, before getting married, many people actually never saw their wives or what their husbands looked like. And men and women don't kiss, the whole sentence is that men and women don't kiss, it is polite, it is drowned, and it is endowed with hands and rights.

Because when Mencius said this sentence at that time, some people made things difficult for them, saying that if there was such a thing as skin-to-skin intimacy, it was an act of giving and receiving by men and women, but if her sister-in-law drowned before, should she be saved as a brother-in-law? Or should we be polite enough not to rescue? So Mencius at that time replied that my sister-in-law drowned and didn't save her. He behaves like a jackal, so if my sister-in-law is drowned or in any danger, she should be saved. This should be treated according to the situation at that time.

Therefore, it is polite for men and women not to kiss, to drown each other, and to be given hands and rights. In fact, it means paying attention to etiquette at ordinary times, but if you encounter an emergency, you should make changes according to the situation at that time, rather than obeying the etiquette at that time. After all, life is far greater than the etiquette at that time. So the first sentence emphasizes etiquette, and the second sentence emphasizes flexibility.