Establishing a positive image in the minds of the police and the public is extremely important, especially for someone like Han Fei. The protection of the police could spare him a lot of trouble, and some big companies wouldn't dare to bypass procedural justice and do something too excessive directly to him.
Every small thing Han Fei did was adding chips for himself, waiting for the moment he could finally strike back.
When he arrived at the city sub-bureau, Li Xue's superior met with Han Fei and personally explained the situation of some of the victims' families. He also subtly told Han Fei that it wasn't necessary to turn to the Xinhu Police every time he did a good deed, as many charitable organizations are open and transparent nowadays.