Zechen and Yanbo discovered from DNA samples that the real culprit who set the fire was actually the dead Rong Hui, so they immediately informed Xiaorou of the news. After the police obtained the search warrant, Xiaorou immediately went to Red's residence to search. In addition to revealing that Xiaohua was actually Rong Hui himself, forensic evidence also found guitar strings and blood-stained glass fragments suspected to be next to the skeleton from his home.