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Luo Maosen's subordinate, Viper Bing, changed the drugs and sold them privately, and his sister Dangna was a part of the selling. In the meantime, the arrival of Cao Li’ang, a new reckless police officer, broke the leisure life of officer Hui. Hui and Cao Li’ang took over the murder case of Luo Maosen and found clues in Dangna. However, Luo Maosen also found out about Viper Bing. This time, Hui and Luo Maosen were both focusing on Dangna…...