With his strong martial arts skills and extraordinary resourcefulness, Lin Yu rose to prominence in the underworld. He acts decisively and ruthlessly, but sticks to his inner bottom line and does not kill innocent people indiscriminately or bully the weak. He gradually establishes his own prestige in the underworld and becomes a presence that scares his opponents. But Lin Yu knew that the underworld was not his destination, and he longed to get rid of the darkness and move towards the light. In Baidao, Lin Yu used the connections and resources he accumulated in the underworld to cooperate with the police to provide key clues for fighting crime. He assisted the police in solving many major cases, leaving criminals hiding in the darkness with nowhere to hide. However, his behavior also aroused dissatisfaction and fear from some forces in the black and white circles. They united and tried to put Lin Yu to death. In the face of many crises, Lin Yu never backed down.
