The Chinese wonderful book "Tui Bei Tu" was co-authored by Li Chunfeng and Yuan Tiangang in the early Tang Dynasty. It predicted changes in the past dynasties with accuracy and validity. After reading the book, Emperor Taizong of Tang Dynasty was very impressed and rewarded Li Chunfeng generously. Yuan Tiangang was jealous of Li Chunfeng for taking away his credit and bore a grudge. After Taizong's death, the two separated the picture and text of "Tui Bei Tu" and the two families became enemies. The "Tui Bei Tu" disappeared from the folk from then on. Hundreds of years later, the descendants of the two families became husband and wife by accident...