Yuncheng, the youngest imperial eunuch in the Dayin Dynasty, has a withdrawn and cold personality, and is nicknamed "Ice Coffin" by others. He is proficient in astrology, mechanism techniques and poison theory, but has been ostracized by his colleagues for many years because of his poor speech. One day, the powerful regent Xiao Jin suddenly showed an unusual interest in him. Not only did he forcefully move into his mansion, but he also changed his tricks every day to feed him, give him gifts, block knives, and even announced in public: "Who dares to touch my people?" What's worse is that Xiao Jin looks as gentle as jade on the surface, but in fact he is paranoid and crazy. Once Yuncheng becomes slightly alienated, his eyes will be sinister and his methods will be ruthless. But this person always put on clothes, cooked medicine, and kept lights on for him late at night... Yun Cheng said firmly, "Don't come near me," while silently accepting the hand warmer that the other party sent him. This begins an alternate history sweet pet comedy that seems to be a daily mutual favor, but actually has an undercurrent.
