Grandpa tells jokes to his grandson.

Grandson hit a bowl, and grandpa was so distressed that he reached out and slapped his grandson in the face. Three days later, the whole family ate around the table, and the grandson suddenly put down his chopsticks, laughed loudly and cried loudly.

"Eat well, why are you crying?" Father asked.

The grandson pointed to his grandfather and said, "He slapped me the day before yesterday."

Father immediately stood up, kicked off the pedal, went to grandpa, waved, drew his bow left and right, and slapped him twice.

Grandpa asked him in surprise, "What are you doing?" The father said mercilessly, "If you slap my son, we will slap your son twice."