Northern Song Dynasty: in the Beginning of the Border Army, the System Made Me the God of War

It is said that the shame of Jingkang is an eternal pain for the Han people. If a modern military fan who is familiar with history returned to that year with a plug-in, would the ending be different? If the court is rotten, then straighten it out with your own hands; if the border is in danger, then use yourself as a wall! There are no magic weapons descended from heaven, only brothers in a hundred battles! This time, I, Lin Ce, will make the Jin cavalry come back and never come back, and build another hundred years of national destiny for the Song Dynasty!