Kong Li's appearance in court means that his daughter-in-law or students are taught, and also refers to the ceremony of respecting and feeding the elders. It means that the younger generation has accepted the lessons of the older generation.

Kong Li court original source:

Ji The Analects of Confucius: "Ask Yu (son of Confucius, name):' Is Confucius unusual?' Yes:' Not yet. When you taste independence, carp often goes beyond the court.