Courtyard Chronicles: Revenge in the Siheyuan

Li Jianguo wakes up in 1960s China with nothing but heartbreak—his crush Qin Huairu marries another man the very next day. Three years later, he returns to the iconic courtyard community as a certified engineer with a mysterious daily sign-in system that grants him outrageous combat charms and life-changing rewards. When old enemies try to push him around, Li unleashes his "Mad Dog Combat Charm" and watches grown men grovel at his feet. Armed with modern knowledge, a sharp tongue, and supernatural perks, he's ready to rewrite his fate in the tight-knit world of the Siheyuan.