The undated photo shows the construction site of the National Speed Skating Hall, the venue for speed skating events of the 2022 Winter Olympic Games, in Beijing, China. According to an exclusive interview on Thursday with Xu Zhijun, deputy secretary of the Beijing Organizing Committee for the 2022 Olympic and Paralympic Winter Games, the preparation work is so far going smoothly in terms of many aspects such as infrastructure construction projects, as there are 1000 days left until the 2022 Beijing Winter Olympics begin. (Xinhua)