People escape to an air-raid shelter and enjoy the cool air in Nanjing, East China's Jiangsu province, on July 15, 2018. (Photos: IC)

The Chinese city of Nanjing, Jiangsu Province, opened seven air-raid shelters on Sunday, allowing residents to take refuge from the heat.

The temperature and humidity in all of the shelters are controlled with comfort in mind.

Some air-raid shelters are equipped with drinking fountains, tables, chairs, wireless internet and medicine for heatstroke prevention.

Entertainment facilities in the shelters include televisions, chess and cards, a fitness room and newspapers.