A person has the loyalty of focusing on love and devoting himself to it. According to the records of personal libraries, "bootstrap and clear the pool, hang yourself on the southeast branch" is a poem that is often quoted. Translated, it means a person who pays attention to family and devotes himself wholeheartedly to it. Even if he sacrifices himself, he will complete the task and finally die in his post, becoming a heroic hero and a spiritual force showing loyalty, responsibility and courage. The earliest allusions appeared in the literary work Cao Wu Zhuan in the Southern and Northern Dynasties.