Black and white are impermanent, the pullers of life and death, one black and one white, two heroes in the underworld. Xie Chenyang changed his clothes from black to white for Shen Xingchen, and was known as Mr. Decent Mr. Bai. Shen Xingchen changed his life to Xie Chenyang, just to be by his side, and was known as the Fourth Master Black and the Insolent King. The look back at us when we first met has lasted for thousands of years, and we will never forget each other from now on.