Dominate the Song Dynasty

In the seventh year of Shaoxing, on a snowy night in Lin'an, someone rescued Yue Fei from Jie Tian Prison, and 60,000 Yue family troops disappeared out of thin air. No one knows who did it. Only Li Si knew - because it happened twenty years later. Now, he is an ordinary commander of the Imperial Army of the Song Dynasty. He is treated as a migrant worker by the civil servants and treated as a fool by his superiors. But no one knows that this "idiot" is a top killer who has traveled from the 21st century. Within twenty years, he would save money, people, and weapons to lay a net from Bianliang to Lin'an. The name of the net is: Save Yue Fei.