A: The father's dance in the title refers to the father's body swinging from side to side on the chessboard.

Why is his son the happiest son in the world?

Answer: Because his father loves his son very much, he can make himself miserable for the sake of his children. It is said that his son is the happiest son in the world.

After reading the fifth and sixth paragraphs, where did you experience the great fatherly love of that father?

A: I came from "the dock and the boat are connected by a narrow board." He walked on it with heavy bricks on his shoulders, but kept his eyes on the children. Several times, he almost fell into the water and swayed from side to side for a long time before gradually stabilizing. However, he told his son that dad was dancing for you. Isn't it very good? " Experience the great fatherly love of that father.