What does the grey Macelo Wong horse and the dark horse tell us?

Grey Macelo Wong horse and dark horse tell us that we need to be filial to our parents, we should be filial to our parents enough, and we should always love them, whether before or after death.

Original story:

Once upon a time, there lived three brothers in the village. One day, their old father was very ill and dying. He called all his sons to bed and told them, "Children, after I die, you will take turns to sleep with me at the grave." Say that finish, he died.

The three brothers sadly buried their old father. It will soon get dark, and it's the boss's turn to sleep in the grave. I don't know whether he is lazy or afraid. He said to the third child, "Fool, don't do anything. Go to my father's grave and sleep for me! " "