A man holds a child as they visit a park with replicas of foreign and domestic space vehicles displayed in Beijing, China, Sunday, June 26, 2016. China on Sunday recovered an experimental probe launched aboard a new generation rocket, marking another milestone in its increasingly ambitious space program that envisions a mission to Mars by the end of the decade. (Photo by Ng Han Guan/AP Photo)





A mascot of Didi Chuxing is seen at the company's headquarters in Beijing, China, May 18, 2016. (Photo by Kim Kyung-Hoon/Reuters)





A man holding a receipt from an ATM machine in his mouth walks out of a branch of Postal Savings Bank of China (PSBC) in downtown Beijing, China, November 12, 2015. (Photo by Kim Kyung-Hoon/Reuters)





People perform a dance wearing army uniforms for the upcoming 95th anniversary of the foundation of Communist Party of China, in Changchun, Jilin Province, China June 16, 2016. (Photo by Reuters/Stringer)





People practise yoga at a tourist spot ahead of the International Day of Yoga, on the outskirts of Beijing, China, June 20, 2016. (Photo by Reuters/China Daily)





People practise yoga at a tourist spot ahead of the International Day of Yoga, on the outskirts of Beijing, China, June 20, 2016. (Photo by Reuters/China Daily)





An aerial view shows people practising yoga on a glass sightseeing platform ahead of the International Day of Yoga, on the outskirts of Beijing, China, June 20, 2016. (Photo by Reuters/Stringer)





People practise yoga on a glass sightseeing platform ahead of the International Day of Yoga, on the outskirts of Beijing, China, June 20, 2016. (Photo by Reuters/Stringer)





A villager cycles outside a police station in Wukan village in China's Guangdong province, June 20, 2016. (Photo by James Pomfret/Reuters)





Villagers gather in the alleyways of Wukan village in China's Guangdong province June 20, 2016. (Photo by James Pomfret/Reuters)





Villagers including schoolchildren take part in a protest march, demanding the release of their village chief Lin Zuluan, in Wukan, in China's Guangdong province June 21, 2016. (Photo by James Pomfret/Reuters)





People clean a flooded street in Poyang County, Jiangxi province, China June 21, 2016. (Photo by Reuters/China Daily)





A man looks at job information at an employment fair beside a street in Zhengzhou, Henan province, February 19, 2014. (Photo by Jason Lee/Reuters)





A villager who was injured when a tornado hit Funing on Thursday, is seen at his damaged house in Yancheng, Jiangsu province, China June 25, 2016. (Photo by Aly Song/Reuters)





A man strikes a hammer against a 430-meter-long glass-bottom bridge during a safety test ceremony, in Zhangjiajie, in Zhangjiajie, Hunan province, China, June 25, 2016. Picture taken June 25, 2016. (Photo by Reuters/China Daily)





A car waits for a safety test ceremony of a 430-meter-long glass-bottom bridge in Zhangjiajie, Hunan province, China, June 25, 2016. (Photo by Jimmy Guan/Reuters)





People wait for a safety test ceremony of a 430-meter-long glass-bottom bridge in Zhangjiajie, Hunan province, China, June 25, 2016. (Photo by Jimmy Guan/Reuters)





A view of a 430-meter-long glass-bottom bridge before a safety test ceremony, in Zhangjiajie, Hunan province, China, June 25, 2016. (Photo by Jimmy Guan/Reuters)





A man strikes a hammer against a 430-meter-long glass-bottom bridge during a safety test ceremony, in Zhangjiajie, Hunan province, China, June 25, 2016. Picture taken June 25, 2016. (Photo by Jimmy Guan/Reuters)





Shoppers cross a street at the Causeway Bay shopping district in Hong Kong July 22, 2014. (Photo by Bobby Yip/Reuters)





Workers walk out of a factory building near stacks of steel bars at Shanxi Zhongsheng Iron and Steel in Fenyang, Shanxi Province, China, April 28, 2016. (Photo by John Ruwitch/Reuters)





Giant clam shells are seen outside a factory in the seaside town of Tanmen in China's Hainan province May 10, 2016. (Photo by Farah Master/Reuters)





Giant clam shells are displayed inside a store in the seaside town of Tanmen in China's Hainan province May 10, 2016. (Photo by Farah Master/Reuters)





Ornaments made from giant clam shells are seen inside a store in the seaside town of Tanmen in China's Hainan province May 10, 2016. (Photo by Farah Master/Reuters)





A worker makes giant clam shells into jewellery and ornaments inside a factory in the seaside town of Tanmen in China's Hainan province May 10, 2016. (Photo by Farah Master/Reuters)





Products made from giant clam shells are displayed inside a store in the seaside town of Tanmen in China's Hainan province May 10, 2016. (Photo by Farah Master/Reuters)





Soldiers of China's People's Liberation Army (PLA) walk past a poster of Tiananmen Square at an exhibition celebrating the 95th anniversary of the foundation of Communist Party of China in Shanghai, China, June 27, 2016. (Photo by Reuters/Stringer)





A Chinese farmer loads his melons onto a cart on Shezai Island where the Sun Yat-Sen University-Michigan University Joint Center of Vector Control for Tropical Disease is conducting its release field program on June 23, 2016 in Guangzhou, China. Considered the world's largest mosquito factory, the laboratory raises millions of male mosquitos for research that could prove key to the race to prevent the spread of Zika virus. The lab's mosquitos are infected with a strain of Wolbachia pipientis, a common bacterium shown to inhibit Zika and related viruses including dengue fever. Researchers release the infected mosquitos at nearby Shazai island to mate with wild females who then inherit the Wolbachia bacterium which prevents the proper fertilization of her eggs. The results so far are hopeful: After a year of research and field trials on the island, the lab claims there is 99% suppression of the population of Aedes albopictus or Asia tiger mosquito, the type known to carry Zika virus. Researchers believe if their method proves successful, it could be applied on a wider scale to eradicate virus-carrying mosquitos in Zika-affected areas around the world. The project is an international non-profit collaboration lead by Professor Xi Zhiyong, director of the Sun Yat-Sen University-Michigan University Joint Center of Vector Control for Tropical Disease with support from various levels of ChinaÍs government and other organizations. (Photo by Kevin Frayer/Getty Images)





Chinese honor guard members line up in formation before a welcoming ceremony for Russian President Vladimir Putin at the Great Hall of the People in Beijing, Saturday, June 25, 2016. (Photo by Mark Schiefelbein/AP Photo)





This picture taken on September 9, 2012 shows an elderly man riding on a toy horse in Beijing. China says its trade surplus widened to 26.7 billion USD in August as exports remained weak and imports registered a surprise decline in a further blow to the country's slowing economy. (Photo by Wang Zhao/AFP Photo)





Children walk out from the Beijing No. 2 Experimental School near a tarp covering what used to be the running track, in Beijing, China, Thursday, June 23, 2016. Schools across China have been ordered to remove running tracks made from toxic materials that have been blamed for sickening students, in the latest in a long line of product scandals blamed on corruption and weak oversight. (Photo by Ng Han Guan/AP Photo)





Visitors hold ice blocks to cool themselves in hot weather at a water park on June 23, 2016 in Chongqing, China. Citizens and visitors escaped high temperature at a water park in Yangren Jie (also known as Foreigner Street), Nan'an District of south China's Chongqing. (Photo by VCG/VCG via Getty Images)





Waste collectors ride their loaded tricycles on the streets in Shanghai, China on June 20, 2016. (Photo by Johannes Eisele/AFP Photo)