Shengjingyuan has been in a bad situation for ten years, and the property is eating people. An old lady living alone was welded to death by a fire escape and burned alive. It was later determined to be an "accident". The whole community is scolding him, but no one can cure him. Until a solitary neighbor spent three years building up a chain of evidence that could nail everyone - he was not a hacker, and he did not break the law. He only used public information to bring the property, the owner of the illegal construction, and the boss behind it to court one by one. Hiding in the market, holding a sword to eliminate evil.