Chinese Vice Premier Zhang Gaoli(Gesturing R) presides over a symposium on the development of the Beijing-Zhangjiakou high-speed railway and a highway linking Beijing's Yanqing district and Chongli county of Zhangjiakou city, in Beijing, capital of China, Sept. 2, 2016. Zhang had an inspection tour on infrastructure construction work related to the 2022 Winter Olympic Games here Friday. (Xinhua/Liu Weibing)