North Shaanxi, a remote and barren place. On this Loess Plateau, the people are simple and kind-hearted, and it is where the Yan family resides. In a certain year, an epidemic spread, and nearly all of the Yan clansmen had died. It was when the Yan family learned the method of making firecrackers from the Song family that they began to thrive. Since then, the Yan family chief decided to treat the Song family well, ensuring their livelihood and proper burial without any mistakes. From then on, the Yan and Song families coexisted. However, the Song family did not engage in labor but relied solely on the support of the Yan family, which caused resentment. When Yan Wanxi became the chief, he was ruthless and sought an opportunity to drive all the Song clansmen out of the Loess Plateau, re-establishing sole control over the area.