That evening, she had returned to the crime scene and discovered that Hsu was already dead. She had then used aqua regia--a mixture of hydrochloric and nitric acids--to disfigure the body and make it unrecognizable. Near the body she had left a condom which she had kept as a souvenir after having sex with Tseng Huan-tai, in an attempt to mislead the police into investigating the killing as a rape case.
當天晚上，她回到命案現場，發現死者已沒有氣息，便用鹽酸和硝酸所調配的「王水」毀屍，並把她與曾煥泰發生關係後留作紀念的一枚保險套丟在屍體旁邊，企圖誤導警方朝姦殺方向偵辦。