
Ding Junhui of China competes during the first session of the semifinal match against Mark Selby of England during the World Snooker Championship 2017 at the Crucible Theatre in Sheffield, Britain, on April 27, 2017. (Xinhua/Jon Buckle)

Ding Junhui of China competes during the first session of the semifinal match against Mark Selby of England during the World Snooker Championship 2017 at the Crucible Theatre in Sheffield, Britain, on April 27, 2017. (Xinhua/Jon Buckle)