Solar panels are seen in Yinchuan, Ningxia Hui Autonomous Region, China April 18, 2017. (Photo by Reuters/Stringer)





Nursing students holding candle shaped lights attend a ceremony ahead of the International Nurses Day on April 27, 2017 in Taiyuan, Shanxi Province of China. 670 nursing students of a health school received nurses' caps during a ceremony on Thursday in Taiyuan. (Photo by VCG/VCG via Getty Images)





“In April 2003, I was walking through a large housing estate on the Kowloon side when I stumbled across a small Chinese restaurant and a terrace that you could stand on. I looked up and saw four pink, plucked ducks strung up on metal hooks. It was a perfectly normal scene to a local, but it was really odd for someone who was still foreign. It was around the time of Sars, the bird-flu epidemic, so it felt controversial – as well as darkly comic – to be photographing dead ducks”. (Photo by Michael Wolf)





In this file photo taken Saturday, December 12, 2015, visitors to a park gestures at each other near chimneys spewing smoke in Beijing, China. Researchers say Tuesday, April 25, 2017 that China's conversion of coal into natural gas could prevent tens of thousands of premature deaths annually. But there's a catch: It also could undermine efforts to rein in greenhouse gas emissions. (Photo by Ng Han Guan/AP Photo)





People practise tai chi on a suspension bridge in Beijing, China on April 23, 2017. (Photo by Reuters/China Stringer Network)





Women gesture as they pose for a selfie in front of Tiananmen Gate during the May Day holiday in Beijing, Monday, May 1, 2017. Millions of Chinese are taking advantage of the May Day holidays to visit popular tourist sites. (Photo by Mark Schiefelbein/AP Photo)





In this photo taken Friday, January 27, 2017, a worker waits to shovel coal to feed kitchen stoves at the Liuminying village in Beijing, China. (Photo by Ng Han Guan/AP Photo)





Primary school students wearing traditional Chinese costumes walk during a sports event in Shenyang, Liaoning province, China, April 27, 2017. (Photo by Reuters/Stringer)





A man walks through a cloud of dust whipped up by wind at the construction site near newly erected office skyscrapers in Beijing, China April 20, 2017. (Photo by Thomas Peter/Reuters)





Trainees from Dewei Security walk for a daily training session at a training camp, on the outskirts of Beijing, China March 2, 2017. (Photo by Jason Lee/Reuters)





People fly drones during the launch ceremony of an aerial photography contest held in Shanghai, China April 26, 2017. (Photo by Reuters/Stringer)





A robot from Urobot dances at the Global Mobile Internet Conference (GMIC) 2017 in Beijing, China April 28, 2017. (Photo by Jason Lee/Reuters)





Visitors stand around a ROBOTLEO robot at the Global Mobile Internet Conference (GMIC) 2017 in Beijing, China April 28, 2017. (Photo by Jason Lee/Reuters)





Members of China's all-girl “boyband” FFC-Acrush leave the stage after their maiden press conference in Beijing, China April 28, 2017. (Photo by Damir Sagolj/Reuters)





Members of the staff wait for the start of the maiden press conference for China's all-girl “boyband” FFC-Acrush in Beijing, China April 28, 2017. Picture taken April, 28, 2017. (Photo by Damir Sagolj/Reuters)





Members of China's all-girl “boyband” FFC-Acrush wait for the start of a rehearsal at a dance studio in Beijing April 27, 2017. (Photo by Thomas Peter/Reuters)





A staff member holds up a toy tiger head as she poses for a picture in a stall at the Yiwu Wholesale Market in Yiwu, Zhejiang province, China, April 28, 2017. (Photo by Thomas Peter/Reuters)





A Long March 7 orbital launch vehicle carrying China's cargo spacecraft Tianzhou-1 is seen shortly before lift off from its launch pad at the Wenchang Space Launch Centre in Wenchang, southern China's Hainan Province, on April 20, 2017. A Chinese rocket successfully sent the country's first cargo spacecraft, Tianzhou-1, into space from the southern island province of Hainan on April 20. (Photo by Fred Dufour/AFP Photo)





Head of a legendary ethnic Miao goddess statue is lifted at the construction site of the statue, in Jianhe County, Guizhou Province, April 15, 2017. (Photo by Reuters/Stringer)





A child eats a lollipop as Tibetan women stand in a village near the Yamdrok Lake on April 26, 2017 in Dongla County in the Lhokha Prefecture of Tibet Autonomous Region, China. Yamdrok Lake is one of the four largest sacred lakes in Tibet. The lake is surrounded by many snow-capped mountains and is fed by numerous small streams. (Photo by Wang He/Getty Images)





Spectators react as a visitor wearing a virtual reality headset plays an interactive video game at the G Festival, part of the Global Mobile Internet Conference (GMIC) in Beijing, Saturday, April 29, 2017. The GMIC features current and future trends in the mobile Internet industry by some major foreign and Chinese internet companies. (Photo by Mark Schiefelbein/AP Photo)





A woman with long hair poses for pictures in Weihai, Shandong province, China, April 22, 2017. (Photo by Reuters/Stringer)





People walk past an advertising poster for a luxury villa, outside a construction site in Beijing, China April 20, 2017. (Photo by Thomas Peter/Reuters)