A man pushes a fashion advertisement billboard outside a fashion boutique under renovation at Ritan International Trade Center in Beijing, Monday, May 8, 2017. China has reported its exports expanded for a second straight month in April but at a slower pace while import growth also decelerated as demand cooled both at home and overseas. (Photo by Andy Wong/AP Photo)





Children wearing costumes perform with drums in Guangan, Sichuan province, China May 10, 2017. (Photo by Reuters/Stringer)





A car is seen flooded as heavy rainfall hits Guangzhou, Guangdong province, China, May 7, 2017. (Photo by Reuters/Stringer)





A Chinese police officer stands guard during a sandstorm overlooking Tiananmen Square on May 4, 2017 in Beijing, China. Sandstorms are common in northern China during the spring season and are caused when heavy winds from Mongolia in the north brings sand and pollutants that can blanket Chinese cities and cause air quality to deteriorate. (Photo by Kevin Frayer/Getty Images)





Chinese people practice Tai Chi moves at a park in Beijing, China, 07 May 2017. Tai Chi is an internal Chinese martial art practiced for both its defense training and its health benefits. (Photo by Roman Pilipey/EPA)





The skyline of Beijing's central business area is seen on a sunny day, China December 22, 2016. (Photo by Jason Lee/Reuters)





A paramilitary police officer stands guard at Tiananmen Square as a dust storm hits Beijing, China May 4, 2017. (Photo by Jason Lee/Reuters)





A woman wears a face mask as a dust storm hits Beijing, China May 4, 2017. (Photo by Thomas Peter/Reuters)





A street cleaner wears a face mask as a dust storm hits Beijing, China May 4, 2017. (Photo by Thomas Peter/Reuters)





People wear face masks as they wait to cross a street near the China Central Television (CCTV) headquarters during a dust storm in Beijing, China May 4, 2017. (Photo by Thomas Peter/Reuters)





Monks pour water onto a Buddha statue during a celebration event for Buddha's birthday in Sanya, Hainan province, China May 3, 2017. (Photo by Reuters/Stringer)





People pour water onto a Buddha statue during a celebration event for Buddha's birthday in Sanya, Hainan province, China May 3, 2017. (Photo by Reuters/Stringer)





People perform a local dance play to celebrate Buddha's Birthday in Zhongshan, Guangdong province, China May 3, 2017. (Photo by Reuters/Stringer)





Paramilitary policemen participate in a training session in Nanning, Guangxi Zhuang Autonomous Region, China May 3, 2017. (Photo by Reuters/Stringer)





A woman lies in a coffin during an opening day of a funeral parlour in Chongqing, China on April 28, 2017. (Photo by Reuters/Stringer)





Rescuers gather near a site of a forest fire in Hulunbuir, Inner Mongolia Autonomous Region, China, May 4, 2017. (Photo by Reuters/Stringer)





The exit of a subway station currently in operation, is seen in a sparsely populated area in Chongqing, China on May 9, 2017. (Photo by Reuters/Stringer)





Soldiers from honour guards hold red flags during a welcoming ceremony for Vietnam's President Tran Dai Quang (not pictured) outside the Great Hall of the People, in Beijing, China May 11, 2017. (Photo by Jason Lee/Reuters)





Wang Ruoyu, 37, mother of a 16-year-old son and a yoga coach, poses with her new tattoo at Samurai Tattoo in Shanghai, China, April 12, 2017. Ruoyu had a caesarean delivery (C-section) because her baby weighed 4.25 kilograms at birth. She began practicing yoga for postpartum recovery and became a yoga coach. “I love all beautiful things that make me look better”, she said, “I chose the pattern of a crown with wings to cover the scar. It looks nice”. (Photo by Aly Song/Reuters)





Grace Yuan's 3-year-old daughter Rebecca, looks at the caesarean delivery (C-section) scar on her mother's belly, which is being worked on by a tattoo artist, at Samurai Tattoo in Shanghai, China, April 26, 2017. Yuan's daughter thinks the scar is ugly, making Yuan want to cover it up. As a dance teacher, she feels awkward when the scar is exposed as she wears dancing costumes. “Now I feel more confident after getting this tattoo. I can dance freely on the stage without worries or awkwardness”, said Yuan. (Photo by Aly Song/Reuters)





A temporary shelter is pictured after an earthquake struck Taxkorgan county, Kashgar prefecture in Xinjiang, China May 11, 2017. (Photo by Reuters/Stringer)





People visit Xuankou Middle School, a memorial site of the 2008 Sichuan earthquake, a day before the ninth anniversary of the earthquake, in Yingxiu town, Wenchuan county, Sichuan province, China May 11, 2017. (Photo by Reuters/Stringer)





A Chinese woman wears a mask to protect from particles blown in during a sandstorm as she walks in the street on May 4, 2017 in Beijing, China. Sandstorms are common in northern China during the spring season and are caused when heavy winds from Mongolia in the north brings sand and pollutants that can blanket Chinese cities and cause air quality to deteriorate. (Photo by Kevin Frayer/Getty Images)





A woman covers her face by hands from polluted air and sandstorm in Beijing, Thursday, May 4, 2017. Authorities in Beijing issued a blue alert on air pollution as sandstorm swept through the Chinese capital city on Thursday morning. (Photo by Andy Wong/AP Photo)





Nurses practice smiling with chopsticks in their mouths at a hospital in Handan, Hebei province, China, May 8, 2017. (Photo by Reuters/Stringer)





Employees work on traditional cloth shoes in Yiyuan County, Shandong province, China, May 2, 2017. (Photo by Reuters/Stringer)





In this April 22, 2017 photo, tourists take selfies at the top of Mount Tai, China's most sacred mountain, after a climb up more than 6,000 stone steps. (Photo by Louise Watt/AP Photo)





Alibaba employees attend a mass wedding at their headquarters in Hangzhou, Zhejiang province, May 10, 2017. (Photo by Reuters/Stringer)