Introduction to the Department of Guiding and Grinding: It is believed in common belief that after a person dies, the Department of Guiding will send envoys to guide the way. Those who do good deeds throughout their lives are led to heaven and receive blessings; those who do evil are pushed into hell and suffer the consequences. It embodies the Taoist concept of retribution for good and evil. "Mokan" means research and approval. The function of this department is to carefully check and verify the seriousness of the crimes convicted by the Department of Prediction to avoid unjust, false and wrong convictions, which may affect innocent people. It is the review agency of the underworld.