Mu Hefeng (穆和枫 Mù Héfēng), codename "Maple", is an investigator (sergeant level) in the Department of Leadership.
- Jiang Yifei
- Main article: Jiang Yifei
- Mu Hefeng respects and admires Jiang Yifei. Although they are both sergeant-level investigators, she is no match by herself. Mu Hefeng will solve crime with Yin Qingrong whenever Jiang Yifei is absent.
- Yin Qingrong
- Main article: Yin Qingrong
- He is Mu Hefeng's partner in crime, and both view Jiang Yifei as their master.
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