Photo shows a construction worker taking photos at the National Speed Skating Oval in Beijing, capital of China, Jan. 28, 2021. The ice-making work at the National Speed Skating Oval in Beijing, also known as the "Ice Ribbon", was completed, meaning the iconic venue for the 2022 Winter Olympics is now ready for test competitions.Photo:China News Service

Photo shows a construction worker taking photos at the National Speed Skating Oval in Beijing, capital of China, Jan. 28, 2021. The ice-making work at the National Speed Skating Oval in Beijing, also known as the "Ice Ribbon", was completed, meaning the iconic venue for the 2022 Winter Olympics is now ready for test competitions.Photo:China News Service