supernatural doctor's secret recipe (idiom); fig. hypocritical and murderous dictator

Legend has it that Shen Nong wrote down the magic formula for avoiding heaven on the ancient psychic stone. As long as you decipher the formula on the stone, not only can you realize longevity, but you can also communicate with ghosts and gods, enslave thousands of ghosts and gods, and travel to and from the three worlds. Throughout the ages, countless healers have been swept up in the madness, and only one has succeeded, and that person is known as the Ghost Doctor! Ghost doctors travel between the earthly world and the underworld, walking on the edge of yin and yang! During the war, Wu San, a tomb raider, was forced by a group of Japanese soldiers to steal a strange fire-alkane corpse suit from an ancient tomb. The descendant of Wu San, with the strange text deciphered on the corpse suit, learns the art of ghost medicine, the ghost moon, the ghost blood demon tree, the eternal immortality pills, and countless ancient evils come one after another, and in the process, he unknowingly walks into a set up more than 1,000 years ago!