Orphan Song Yin (played by Zhang Zhilin) has aspired to become a police officer since childhood. As he grows up, he successfully becomes a police officer and is about to be transferred to an important department of the police station with excellent grades. Just before he joined Oji, his boss Huang Sir noticed his excellent performance and Oji remembered his new face, so he was selected as an undercover agent
Orphan Song Yin (played by Zhang Zhilin) has aspired to become a police officer since childhood. As he grows up, he successfully becomes a police officer and is about to be transferred to an important department of the police station with excellent grades. Just before he joined Oji, his boss Huang Sir noticed his excellent performance and Oji remembered his new face, so he was selected as an undercover agent