In this Week in Photos, Chinese athletes are welcomed by a huge number of fans after arriving back in China from the Olympic Games in Rio, children at a sports school practice hard during their summer vacation, Tsinghua University freshmen are taught how to use gas masks, and an orangutan is taken shopping for dresses.

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Chinese supporters take photos of Su Bintian, a Chinese sprinter, as he arrives at Beijing Capital International Airport from Rio de Janeiro after the Olympic Games, Aug. 23, 2016. Beijing Times/IC

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A boy who does diving is helped do leg stretches at Guangzhou Weilun Sports School, Guangdong province, Aug. 23, 2016. Southern Metropolis Daily/Ma Qiang/VCG

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A freshman practices using a gas mask during military training at Tsinghua University in Beijing, Aug. 25, 2016. In China, before they start college their studies, students are required to take part in military training. VCG

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An aerial photo shows vehicles jammed at an intersection after traffic lights broke down, Zhengzhou, Henan province, Aug. 26, 2016. IC

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An orangutan from Yunnan Wildlife Park is taken to a shopping mall by its trainer to shop for dresses in Kunming, Yunnan province, Aug. 24, 2016. VCG

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Han Huanwen, a 44-year-old mechanic, shows off a carving of teapot made by him from peach pits, Qinghuangdao, Hebei province, Aug. 23, 2016. Zhang Liguo/VCG

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Double rainbows seen over Tiananmen Square after a thundershower in Beijing, Aug. 27, 2016. Yang Dong/VCG