In the past, there was a fortune teller in Guazhou, known as "Sai Banxian". It was said that he had never made a mistake in divination and fortune-telling. He could not only tell people's first half of life, when they were weaned, when they spoke, and when they got married, but also predict what they would do in the second half of their lives. Many people were really predicted to the exact same degree.

One day, a man came to "Sai Banxian's" house. This man was handsome and extraordinary. "Sai Banxian" saw it and knew what was going on. He said, "Others who tell fortunes must ask questions thoroughly. When you come to me to tell fortunes, you can save your mouth." The man followed the man's advice and sat there without saying a word. "Sai Banxian" looked at his face and said, "From what I can see, you have a full forehead and a round face. You must be a person of great fortune, many children and good fortune."

The man was about to speak when he was stopped by "Sai Banxian".

He then counted with his fingers and said: "You already have two sons, and you are destined to have two more sons, who will be born soon." The visitor could no longer hold back and said: "I have no sons, but I have four daughters." "Sai Banxian" knew that he would be embarrassed today, and he was anxious, so he thought of a solution: "I asked you to stop talking, but you didn't listen. No wonder I didn't calculate it accurately. Besides, you have four daughters, and you will definitely have four sons-in-law in the future. A son-in-law can be half a son, so what's wrong with me saying that you have two sons?" The saying "a son-in-law is half a son" has been spread since then. Now people use this saying to illustrate that a son-in-law is filial to his father-in-law, and can be half a son. $BNB $NOT $PEPE