Beijing Communist Party Secretary Guo Jinlong attends a ceremony to mark the one year anniversary of Beijing's successful bid for the 2022 Winter Olympics and Paralympics at the Badaling Great Wall on July 31, 2016 in Beijing, China.

Photo taken on July 31, 2016 shows the domain name of 2022 Winter Olympic Games during the event of first anniversary of successful bid to 2022 Winter Olympic Games, in Beijing, capital of China. Official website domain name of Beijing Organising Committee for the 2022 Olympic and Paralymic Winter Games was published and emblems were collected worldwide Sunday night in Yanqing District of Beijing. (Xinhua/Ju Huanzong)

Actors perform during the event of first anniversary of successful bid to 2022 Winter Olympic Games, in Beijing, capital of China, July 31, 2016. Official website domain name of Beijing Organising Committee for the 2022 Olympic and Paralymic Winter Games was published and emblems were collected worldwide Sunday night in Yanqing District of Beijing. (Xinhua/Ju Huanzong)

Wang Anshun (C), Mayor of Beijing and executive president of 2022 Beijing Winter Olympic Games attends the event of first anniversary of successful bid to 2022 Winter Olympic Games, in Beijing, capital of China, July 31, 2016. Official website domain name of Beijing Organising Committee for the 2022 Olympic and Paralymic Winter Games was published and emblems were collected worldwide Sunday night in Yanqing District of Beijing. (Xinhua/Ju Huanzong)

Photo taken on July 31, 2016 shows the domain name of 2022 Winter Olympic Games during the event of first anniversary of successful bid to 2022 Winter Olympic Games, in Beijing, capital of China. Official website domain name of Beijing Organising Committee for the 2022 Olympic and Paralymic Winter Games was published and emblems were collected worldwide Sunday night in Yanqing District of Beijing. (Xinhua/Ju Huanzong)