Yang Long, a special forces soldier with rich practical experience, unfortunately died in a mission. His soul traveled to the Southern Song Dynasty and was reborn as a three-year-old child in a remote mountain village. In this era, the Southern Song Dynasty was in a critical period after the destruction of the Jin Dynasty, with unstable frontiers and internal corruption. Seeing that the people were in dire straits, Yang Long decided to use his knowledge and perseverance to change history. After that, I got to know many celebrities and anti-Mongolian generals, constantly fought against the Mongols, regained the lost territory, and finally defeated the invading Mongolian army. This is the story of the success of the Northern Expedition.
