166cm. The height difference between Xu Tong and his partner Yao Yao is 27cm, while the official height of Xu Tong is 193cm, and the height of Yao Yao is193 (cm)-27 (cm) =166 (cm). Xu Tong was a member of the Wild Ball Emperor. Wild Ball Emperor is a basketball team founded by a group of people who are very interested in basketball. The object of the wild ball emperor Xu Tong is Yao Yao, who is Xu Tong's official girlfriend. She is beautiful, generous and friendly. She often cheers for Xu Tong when she plays.