Yin Wen, the abbreviation of Wen Chang Di Yin Jun Wen, is an important Taoist classic. The evil prose is based on man's heaven and takes the law of cause and effect as the criterion to warn people of the truth of life, so as to reach the ideal realm of life. It is a model of China culture to teach people to do good and eliminate evil.
Yin Zhi is "hidden virtue", which means doing things that are beneficial to people in secret. The latter refers to the good deeds done on earth, which can be recorded in the underworld.