Xiao Yuanshan, a modern migrant worker, traveled to Chongzhen for three years and became a general in Miyun. While transporting grain and grass, he was ambushed by Jiannu, and all the grain and grass were destroyed. In order to avoid the death penalty of the imperial court, he led the remaining troops to take risks. He burned down the food camp of Jiannu, cleverly captured Beil Amin, subdued the mountain bandits, and risked his life to make a surprise attack on Shengjing, which stirred up the war situation in Liaodong. In the desperate situation of troubled times, as a general, he fought against the powerful Eight Banners, struggling to survive, and trying to rewrite the fate of the Ming Dynasty's collapse.