According to legend, there is a village in the forest that has disappeared from the map - Meiyin Village. There is a bottomless pit called Daxu in Meiyin Village. It is said that the bottom leads directly to the underworld. In order to suppress the resentment at the bottom of the pit, every few years, the Wei family of the village chief would establish a pair of twins as twin witches or priests. On the altar at the entrance of the Daxu Cave, let one of them strangle the other to death and throw them into the Daxu. This festival is called the Twins Festival...