Solving the Case is Slightly Bitter, My Sister is Super Sweet.

Summary

In a chaotic night in J City, Lin Xuan, a member of the Special Violent Crime Task Force, investigates a complex case involving criminal activities centered around beggars. After interrogating a suspect named He Qiang, Lin Xuan discovers a mysterious figure named Xu Ming Fei who pays significant amounts to protect beggars and monitor his own family through hidden cameras. With the help of computer expert Zhan Shao Yang, Lin Xuan tracks down a potential lead, leading to an armed police raid on a residential apartment where a middle-aged couple and teenage boy are forcefully detained for questioning about a suspicious network phone.

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