Mafia boss in the body of the Chinese king

Yin Shi is the head of a mafia family and he was led by people who thought that he was good and could not harm the ant, but he represented this in fact. He is a demon who plays the role of kindness. He has no mercy on anyone. One night he is killed by his personal assistant. He travels to the past in the form of the Chinese crown prince and grows up to He regains his position from the advisors, and after regaining his position, while he is on a trip there, he meets the Demon Queen. They end up getting married, but the matter will not end with the Chinese in the war to unify the country.