According to Weibo's inquiry, Zhang Yitong and Zhang Yitong, referees of China Billiards Association, are female, with a height of 160cm and a weight of 90. They graduated from Zaozhuang Institute of Science and Technology with a major in construction engineering. Their hobbies are diving and billiards. Chinese eight-ball keeps such a high degree of attention, that is, there are some very attractive referees to help out. Strictly speaking, such referees also promoted the development of Chinese eight-ball.