There is no absolute good or evil in the world, only interests. Everyone is doing whatever they can to achieve their goals. Huang Sir and Chen Yongren are the police, the one who supports justice, the so-called "good". But Huang Sir is a cruel boss to Chen Yongren. He changed the trajectory of a person's life. He made Chen Yongren do a lot of reluctant things. He is "evil" to Chen Yongren. Chen Yongren has been lurking in the gang for more than 10 years. In order to get close to Han Chen, he had to become ruthless and let himself become a real gang. He is "evil" in the gang. Liu Jianming used to be a gangster, for Han Chen's drug dealing, and became a policeman. He turned from black to white, but he was black at bottom. He wanted to be a good person, but was shrouded in darkness. Black and white, good and evil, there is no absolute. We can't just judge a person by being good or bad, what we can do is choose kindness.
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