In the Siheyuan of Sijiucheng in 1951, Li Xiang appeared on the scene. He was a shady and decisive man who rose from unemployment to the security department of the Red Star Rolling Mill. There are complex characters here: He Yuzhu, Yi Zhonghai, etc., And neighborhood disputes continue. Li Xiang lived a pleasant life amidst calculations and disputes, intertwined with work and love, and fully demonstrated the appearance of all living beings in the courtyard.