Black and white impermanence four kills originated from Chinese folk beliefs and are gods in Taoism. Their images are black and white, with iron whip and chains in their hands, and they are responsible for directing death, which is the existence of extreme fear in people's hearts. In some folk beliefs, it is believed that after death, people must go through a black-and-white impermanent trial before they can enter the nether world, so people often pray for their blessing.

Images and stories of black and white impermanence and four kills often appear in China's ancient literary works and operas. For example, in works such as Tai Zhang Chi Hao San and Broken Bridge Canxue, black and white impermanence and Four Killings become protagonists or important roles, and iron whip uses their chains to clean up the good and evil on earth.

Black-and-white impermanence and Four Killings are often depicted in China folk weddings. The moral is not only to pray for love between husband and wife, but also to remind people to cherish the present, not to be sad, to cherish time and to cherish life. Therefore, black and white impermanence is not only a folk belief, but also a cultural symbol and value concept.