What is the discipline of heaven and earth and the occupation of the underworld?

The Historical Records of the Five Emperors says that Huang Di was born as a god, and used his troops to kill Chiyou. "It is difficult to say life and death according to the discipline of heaven and earth", which is a sacredness that can dominate the universe and determine the social destiny. In ancient society, people thought that the ghost of the ruler was still the ruler of the world after his death, and the living ruler should be protected by the ghost ruler, and he should make sacrifices, divination and pray for the enlightenment of his ancestors when deciding major events. These worship of ancestors' "ghosts" merged with legends and myths and rose to be gods. The rules of heaven and earth probably refer to justice or obeying justice.