Details of Disappearance
Xiang was last seen in Columbia, Missouri on September 23, 2000. Her husband, Yinzhou Zheng, was last seen on September 17, six days before his wife disappeared. Zheng was supposed to go visit his daughter, Xiang's stepdaughter, in Iowa City, Iowa, but he never arrived there and his vehicle was later found still at his residence in Missouri.
Xiang disappeared on the day he was supposed to return from Iowa. She went to work that day, returned home and went to bed, and apparently vanished during the night. Both she and her husband are originally from China, and both of them left their passports behind.
Zheng was a graduate student at the University of Missouri and Zheng's son was also attending the university at the time of his father and stepmother's disappearances. Few details are available in their cases.