Xu Jicheng, deputy director of the Press and Communications Department of the Beijing 2022, briefs media during the a press conference in Kuala Lumpur, Malaysia, on July 28, 2015. [Photo by Sun Xiaochen/chinadaily.com.cn]

"Technically the pollution has been reduced and controlled, we have seven more years to go and it will be sunshine and white cloud," said Xu Jicheng, deputy director of the Press and Communications Department of the Beijing 2022.

"Our mountain venues, the air quality there is very high. When we talk about fresh air in China, we are talking about Qingdao, the city hosting the sailing event in the 2008 Olympic Games and the mountain area in Zhangjiakou and Yanqing, they are Qingdao deep in the mountain. so they have already reached the Olypmic standard, and even better.

"I have the confidence," Xu added.

Lack of natural snow were considered as another disadvantage for Beijing 2022 bid. But the climate conditions in Zhangjiakou's Chongli county, where cross country, freestyle and other skiing events will be held if Beijing wins the bid, won't be a concern.

"The last snow season in the Chongli resort, the snowfall is 70 centimeters, so that's enough for Winter Olympics Games," said Xu.

"Chongli is one of the earliest snowfall areas in East Asia. The snow started in late October, and the snow quality there is one of the best in the world."