Meng Po Tang is a kind of tea soup in ancient folklore in China, which can forget all the troubles and memories, all the love and hate. Legend has it that Meng Po made a soup in the underworld, which made the ghosts who were reincarnated in Naiheqiao forget all the memories of their previous lives thoroughly and reincarnate with peace of mind. The practice is to take human ghosts and medicinal materials collected from the secular world; On the other hand, people's tears are collected and tortured into soup.