Lin Dongf

Undercover within a drug trafficking syndicate, police officer Zhu Yangguang, nicknamed "Old Four", "protected" his drug trafficking accomplice Wu Hainiu, nicknamed "Little B", during a drug enforcement operation. Wu is a key figure within the drug trafficking group who holds the transaction relationships. Despite repeated drug crackdowns by the public security department, they have always been at a disadvantage as they have failed to break through this hidden network

Wang Caihong (played by Song Dandan), who has long passed the age of forty, is a shrewd and capable barber shop owner. In sharp contrast, her husband, He Dacheng, is mediocre and incompetent, just waiting to die and achieving nothing. The ordinary life was in turmoil. Rainbow's younger brother and his wife were having a marital breakdown, which made her quite frustrated. Her younger brother Wang Zhaohui (Li