In pics: Sustainable concept in building venues of Beijing 2022 Winter Olympics

Photo taken on June 12 shows the National Aquatics Center, otherwise known as the "Water Cube", which will be transformed to host curling events at the Beijing Winter Olympic Games in 2022. Chinese experts have been working on key technical issues related to transforming the venue originally designed for water games into a stadium for winter sports, and have already upgraded the dehumidification, sound and lighting systems, as well as mechanical and electrical facilities, in order to reach the standard necessary for the curling event. After the Winter Games, the venue will be used as a site for ice sports, regular training and performances.

Photo taken on June 12 shows the planned location of the “Big Air” venue at Shougang Industry Park, which will hold snowboarding events in 2022. The former steel mill was originally closed down in 2008 ahead of the Beijing Summer Olympics. After the Winter Games, Big Air will be used as the first permanent site of its kind globally, to host national and international Big Air competitions and train athletes.

Photo taken on June 12 shows the construction site of the National Speed Skating Gymnasium. As a newly-established venue for the Winter Games, the stadium will continue to host winter sports after 2022. It will be open to the public with the aim of motivating people in Beijing to practice winter sports.