Main characters •
Zhang Ruoyun as Li Dawei • One of the four new recruits in Balihe, with an optimistic and lively personality, is a well-known thorn in the police station. Tatou, who entered the police force last, stepped on the line in the exams since he was a child, but he has a flexible mind and keen observation ability. He still insisted on the justice in his heart, studied hard, and finally became a qualified people's policeman. •
Bai Lu as Xia Jie • Offspring of martyrs. She grew up in the greenhouse but has a heart that dares to meet unknown challenges. She doesn't want to be a flower in the greenhouse, she wants to prove herself. Xia Jie has both the delicacy and tenderness of a girl, as well as her tenacity and unyielding side. After entering the police force, she has always wanted to get rid of the aura of her parents and become a qualified people's policeman. •
Wang Jingchun as Wang Shouyi • Director of Balihe Police Station. As a good director, he must handle all relationships well and protect everyone's rights and interests. When dealing with his superiors, he is ruthless and hard-working, begging for perfection. He always tried his best to get the best results for the policemen in the station, especially when the people below got into trouble. He went to plead with the director for the matter of Cao Jianjun. His helplessness and sadness were really touching.
Supporting characters • Ning Li as Chen Xincheng • Li Dawei's master, the attitude of abiding by duty and the spirit of never giving up are touching. When he was young, he was also a heroic figure. He carried goji berries in his thermos all day long, tried his best to save the suicide victim, but was sued by the relatives of the suicide victim and paid a large sum of money. Too willing to take Li Dawei, but in fact he has a knife mouth and a bean curd heart. •
Xu Kaicheng as Yang Shu • Master of law from Peking University, I came to Balihe police station only because I have been at the grassroots level for a year. I didn't expect that the knowledge in books is different from real life. Hope so. Later, under the leadership of his master, Yang Shu experienced a series of difficulties and setbacks, and achieved personal growth. Yang Shu finally returned to the Balihe Police Station and officially became a policeman. • Zhao Yang as Cao Jianjun • Yang Shu's master is kind on the surface, and has a very capable brother-in-law. When encountering things, peace is the most important thing, but when encountering major events, he will even push the apprentice to take the blame. I have always been looked down upon by my mother-in-law, thinking that Cao Jianjun is incompetent and unable to make money as a small policeman, and compares him with the eldest son-in-law everywhere. The more this is the case, the more uneasy Cao Jianjun feels, he feels sorry for his wife, and the more he cares about his mother-in-law's opinion, so he needs to prove himself at work and want his mother-in-law to think highly of him. • Cao Lu as Zhao Jiwei • Apprentice police officer. One of the four newcomers in Balihe. He is from the countryside. He is hardworking, honest and honest. He works hard to achieve his goals but lacks talent. Under the guidance of his master, Zhao Jiwei also realized that community work is no small matter. If you want to achieve great things, start with small things. Zhao Jiwei has also become a qualified community policeman. == Soundtrack ==