Venues of 2022 Winter Olympic Games
Updated:2020-07-31 15:53:58 Xinhua
Photo taken on July 29, 2020 shows a tree with a QR code in Yanqing, located in the northern suburbs of Beijing, capital of China. In addition to the Olympic Village, all trees in the entire Yanqing competition zone were registered and had their profiles marked with a QR code. [Photo/Xinhua]
Keywords: Winter Olympic Games