List of Protagonist and Key Characters' Attributes Protagonist: 1. Name: Li Wei 2. Age: 28 3. Occupation: Detective 4. Personality: Intelligent, resourceful, and relentless Key Characters: 1. Name: Zhang Ming - Age: 35 - Occupation: Crime lord - Personality: Ruthless, cunning, and ambitious 2. Name: Cheng Xiaoyu - Age: 25 - Occupation: Forensic scientist - Personality: Methodical, meticulous, and introverted 3. Name: Wang Jie - Age: 40 - Occupation: Li Wei's partner and mentor - Personality: Experienced, wise, and supportive 4. Name: Liu Ying - Age: 30 - Occupation: Journalist - Personality: Tenacious, passionate, and curious 5. Name: Shen Wei - Age: 50 - Occupation: Police chief - Personality: Disciplined, authoritative, and honorable 6. Name: Zhang Xiaomin - Age: 22 - Occupation: Li Wei's younger sister - Personality: Lively, energetic, and protective 7. Name: Guo Xiang - Age: 45 - Occupation: Informant - Personality: Street-smart, manipulative, and opportunistic