Repairman Chen Hao was renovating a house when upstairs resident Wang Guixiang and her son unreasonably blocked his door and demanded five hundred yuan. To get away, he gave the money while retaining all evidence. Later, when the building's common pipes failed, everyone ignored Chen Hao's multiple warnings and privately hired someone to repair them, causing major damage. After the incident, the other party edited a video to cyberbully Chen Hao, attempting to make him shoulder all responsibility. Chen Hao produced complete recording and video evidence, restored the truth under the property management's coordination, and guarded the boundary of human conduct.