Male students sleep in a stadium on the Xuhui Campus of Shanghai Normal University in Shanghai, July 19, 2017. The air-conditioned stadium became a sleeping choice of many college students during the summer vacation as temperatures in the city hit 36 degrees centigrade. Students need to bring only bedding, their student card and an ID to stay. The stadium also has a zone for female students, but none have arrived to sleep. (Photo/VCG)
