According to legend, there is a road called Huangquan Road, a river called Wangchuan River, and a bridge on it called Naihe Bridge. When you walk across the Naihe Bridge, there is an earthen platform called Wangxiangtai. Beside the Wangxiangtai, there is an old woman named Mengpo selling Mengpo soup. There is a stone by the Wangchuan River called Sansheng stone. Mengpo soup will make you forget everything. The Sansheng stone records your past and present lives.
(Actually, this work is both original and not original. The storyline in it is all original. However, other than the plot, such as the introduction, I found it from the Internet.
So I'm not sure if this is original.
Just calculate by derivation first)