"Yuyou, this is the Wangchuan of the ghost world!" Bingmi said. "Forgotten River! I heard that after death, living beings in the human world have to pass through the gate of hell. They pass through Huangquan Road. The boundary between Huangquan Road and Hades is drawn by the Wangchuan River. The water of Wangchuan River is blood-yellow, and it is full of lonely souls and wild ghosts that cannot be reincarnated. It is full of insects and snakes, and the fishy wind blows on your face. There is the Naihe Bridge on the Wangchuan River, and there is an old woman sitting by the Naihe Bridge. Her name is Meng Po. If you want to cross the Wangchuan River, you must cross the Naihe Bridge. If you want to cross the Naihe Bridge, you must drink Mengpo Soup. If you don't drink Mengpo Soup, you will not be able to cross the Naihe Bridge. If you cannot cross the Naihe Bridge, you will not be reincarnated..."