Mark Williams of Wales competes during his semi-final match against Barry Hawkins of England at the World Snooker Championship 2018 at the Crucible Theatre in Sheffield, Britain on May 3, 2018. (Xinhua/Han Yan)
Light show held in China's Shaanxi
China sees tourism boom during May Day holiday
Tourists visit Baiyangdian lake in Xiongan New Area during May Day holiday
Air sports carnival held in Hengshui City, N China's Hebei
Stunning scenery at river bank in Xuanen County, China's Hubei
Tourists enjoy misty scenery across China
In pics: terraced fields in south China's Guangxi
In pics: Chinese PLA air force conducts island patrol training
