Yao Ming(4th L), president of the Chinese Basketball Association, attends the ticketing launch ceremony of the FIBA Basketball World Cup 2019 in Beijing, China, on Feb. 28, 2019. (Photos: Xinhua)

Yao Ming(4th L), president of the Chinese Basketball Association, poses for photos with others during the ticketing launch ceremony of the FIBA Basketball World Cup 2019 in Beijing, China, on Feb. 28, 2019.

Xu Shuoyang, vice general manager of damai.cn gives a speech during the ticketing launch ceremony of the FIBA Basketball World Cup 2019 in Beijing, China, on Feb. 28, 2019.