Beijing is the only dual-Olympic city which hosts both the Summer and Winter Olympics, of which some Western media have expressed worries for the shortage of snow, and then for the quality of artificial snow.
Foreign athletes, however, expressed their satisfaction with all preparations including the artificial snow venues.
Artificial snow was first used at the 1980 Lake Placid Olympic Winter Games. Around 90 percent of snow used at the Alpine skiing venue for the PyeongChang 2018 Winter Olympics was artificial, while man-made snow was also a feature of Vancouver 2010 and Sochi 2014.
Produced by Xinhua Global Service
