Deep licking of the calf: Interpretation: licking with the tongue; Lower leg: lower leg. Licking calves: an old cow loves calves, which is a metaphor for loving children. The old cow licked the calf's hair to show her deep love for the calf. This is a metaphor for his deep feelings for his children. Filial son's upbringing is also happy, not against his will. -The Book of Rites

There are three kinds of filial piety: respecting relatives, enduring humiliation and nurturing. -The Book of Rites

You must know your parents' age. One is happy and the other is afraid. -The Analects of Confucius

When Meng asked about filial piety, Confucius said, "Parents only worry about illness." -The Analects of Confucius governs politics.

Parents love what they love, and parents respect it. -Confucius

All ages are orderly. -Mencius

I am old, and people are old; Young people are young, and so are young people. The world can be transported in the palm of your hand. -Mencius

Being a dutiful son is nothing more than respecting your loved ones. -Mencius

Only filial piety can relieve worries. -Mencius

Father and son are related, monarch and minister are righteous, husband and wife are different, young and old have memories, and friends have letters. -Mencius