The Tai Shu Girl is a beautiful, unnamed girl who appears at the back of the bus on the day of Du Yu's death. According to the discussions between Xie Jin and Du Yu, she is a Tai Shu—an anomaly or a person who should not have been in that time and place. Her presence causes Zhou Zhuangshi to decline Du Yu's seat offer, which ultimately leads to Du Yu's fatal accident. She is a catalyst for the wrongful death. The underworld officials note that theoretically, she should not have existed in that spacetime, and they plan to investigate the matter. She is never seen again and remains a mysterious figure who disrupts fate.
