Youyun's Plan to Restore the Han Dynasty in the Early Song Dynasty

In the third year after the founding of the Song Dynasty, the Sixteen Prefectures of Youyun had been ruled by the Khitans for more than thirty years. Han Zheng traveled from modern times and landed on a hunted refugee. His first weapon was a piece of broken tile. There is no system, no golden fingers, just insights that are thousands of years beyond this era, and a backbone that refuses to accept fate. In the future, the Gaoliang River and Yongxi were completely defeated, and Youyun never came back for a hundred years. He couldn't wait for the rescue from the south. A piece of broken tiles, a broken valley, a group of people with no way out. The snow in Yanshan is very thick, but as long as the fire is still bright, it can melt through it.