People eat hot pot at an air-raid shelter in southwest China's Chongqing Municipality, Aug. 22, 2017. The earliest air defense work of Chongqing was constructed in 1937 and more were built during war times. These air-raid shelters, once used to protect Chongqing residents from air attacks during the war against Japanese aggression, nowadays have turned out to be recreation spots like food plazas and wine cellars for people in the city. (Xinhua/Liu Chan)
