Lu Chen, associate professor of modern military history, died in a car accident. When he opened his eyes again, he became the garrison officer of a dilapidated village on Hebei West Road in the 7th year of Xuanhe's reign in the Song Dynasty. There were two hundred people under his command, half of whom were old, weak, sick, or disabled. Their weapons were in tatters, and all their food and salary had been deducted from them by the superiors. It just so happened that this year was the beginning of the countdown to the demise of the Northern Song Dynasty - the Jin soldiers were about to invade the south in a large scale, and the humiliation of Jingkang was imminent. Lu Chen remembers every key node, every defeat, every wrong decision. He originally wanted to rely on these memories to change his destiny, but he found that the history of this world was different from what he had learned. Some damn people are not dead, and some people who should be there don't exist at all. The historical script in his hand became an incomplete map that was only 70% correct. But no matter how much he was right, there was one thing he was sure of: if nothing was done, Bianjing would be destroyed in two years, Yi Guan would move south, and half of China would fall under the iron heel of the Jin. So he couldn't wait, didn't dare to wait, and couldn't afford to wait. Starting from this broken village, he wanted to give the Song Dynasty another life.