Yao Ming, retired Chinese professional basketball player smiles during a press conference for Beijing 2022 Olympic bid in Kuala Lumpur, Malaysia, Wednesday, July 29, 2015. Malaysia is hosting the 128th International Olympic Committee executive board meeting where the vote for the host cities of the 2022 Olympic Winter Games and for the 2020 Youth Olympic Winter Games will take place. (AP Photo/Vincent Thian)
Chinese dissident artist Ai Weiwei holds his passport in Beijing on July 22, 2015 -- it was returned four years after it was confiscated (AFP Photo/)
Models interact with game players during the annual ChinaJoy exhibition, or China Digital Entertainment Expo and Conference, in Shanghai, east China, July 30, 2015. About 3,500 games developed by more than 700 enterprises from home and abroad were displayed on the exhibition. (Xinhua/Ren Long)
Photo taken on Apr. 23, 2015 shows a real estate project in Huzhou, east China's Zhejiang Province. Sales acreage and revenues of commodity houses in Zhejiang were 25.66 million square meters and 268.9 billion RMB yuan (about 43.3 billion U.S. dollars), 49.6 percent and 48.5 percent year on year respectively in the first half of 2015. (Xinhua/Tan Jin)
Photo taken on July 25, 2015 shows a real estate project in Shaoxing, east China's Zhejiang Province.
Photo taken on July 30, 2015 shows the conducting of rocket rain enhancement by local meteorological department in Dalian, northeast China's Liaoning Province. Local meteorological department has finished 24 missions of artificial precipitation to relieve the severe drought in Dalian since June. (Xinhua/Zhang Chunlei)
Children visit the Zhengzhou Science & Technology Museum during a summer camp in Zhengzhou, capital of central China's Henan Province, July 28, 2015. Children from Hami of Xinjiang joined those in Henan in a summer camp which starting from July 26.(Xinhua/Cai Zengle)
Children pose for photos on a bus during a summer camp in central China's Henan Province, July 30, 2015. Children from Hami of Xinjiang joined those in Henan in a summer camp which starting from July 26.(Xinhua/Cai Zengle)
Students participate in a military summer camp in Beijing, capital of China, July 29, 2015. The military summer camp for youths, located in the Daxing District of Beijing, has attracted more than 15,000 students from across the country since 2008, when it was opened. (Xinhua/Li Xin)
Members of Beijing 2022 Olympic Winter Games bid delegation celebrate after Beijing won the bid at the 128th International Olympic Committee session in Kuala Lumpur, Malaysia, Friday, July 31, 2015. (Xinhua/Wang Lili)
Two boys celebrate on the Tian'anmen Square in Beijing, capital of China, July 31, 2015. Beijing, together with its neighbor city Zhangjiakou, won the bid to host the 2022 Olympic Winter Games. (Xinhua/Yin Gang)
A boy celebrates with flags and stickers on his face on the Tian'anmen Square in Beijing, capital of China, July 31, 2015. Beijing, together with its neighbor city Zhangjiakou, won the bid to host the 2022 Olympic Winter Games. (Xinhua/Yin Gang)
People gather to celebrate in front of the National Stadium in Beijing, capital of China, July 31, 2015. Beijing, together with its neighbor city Zhangjiakou, won the bid to host the 2022 Olympic Winter Games. (Xinhua/Li Xin)
Tao Xiangyang (1st L), military attache of Chinese Embassy to Argentina, Luis Maria Carena (2nd L), Argentina's head of the Joint Chiefs of Staff, and Yang Wanming(2nd R), Chinese Ambassador to Argentina, pose during an event to celebrate the 88th anniversary of the founding of the People's Liberation Army (PLA) of China, at the Chinese Embassy in Buenos Aires city, capital of Argentina, on July 30, 2015. (Xinhua/Martin Zabala)
Workers celebrate the completion of track laying operation of Foshan-Zhaoqing intercity rail line, south China's Guangdong Province, July 31, 2015. Ballastless track laying of the 79.717-kilometer-long rail line was finished on Friday. (Xinhua/Liang Xu)
Children prepare to assemble car parts at a workshop in Zhengzhou, capital of central China's Henan Province, July 30, 2015. Children from Hami of Xinjiang and Henan experienced car parts assembling during a summer camp in Henan on Friday. (Xinhua/Cai Zengle)