Photo taken on Jan. 22, 2021 shows the interior view of the National Speed Skating Oval in Beijing, capital of China. (Xinhua/Ju Huanzong)

The National Speed Skating Oval of Beijing 2022 Winter Olympics in downtown Beijing has finished ice-making trials.

Despite the COVID-19 pandemic, the National Speed Skating Oval, locally known as the "Ice Ribbon", was among 12 competition venues for Beijing 2022 completed by the end of last year.

Photo taken on Jan. 22, 2021 shows the interior view of the National Speed Skating Oval in Beijing, capital of China. (Xinhua/Ju Huanzong)

 
Ice-making trials in the "Ice Ribbon" started earlier this month. The site boasts the most extensive full ice design in Asia, with an ice surface area of 12,000 square meters.

Another highlight is that Beijing has introduced carbon dioxide refrigerants for the ice-making, the least toxic and most environmentally friendly natural refrigerants, in an effort to further reduce greenhouse gas emissions.

Photo taken on Jan. 22, 2021 shows the interior view of the National Speed Skating Oval in Beijing, capital of China. (Xinhua/Ju Huanzong)

 

Photo taken on Jan. 22, 2021 shows the interior view of the National Speed Skating Oval in Beijing, capital of China. (Xinhua/Ju Huanzong)