Southwest China's Chongqing municipality at nightfall [Photo/liangjiang.gov.cn]

As the city is built on mountains, Chongqing has been nicknamed a "mountain city."

The integration of mountainous terrain and urban construction creates a special landscape here. When you drive on the roads in Chongqing, you see buildings above you on one side of the road and buildings below you on the other, as well a skyline of layer upon layer of buildings on mountains.

Chongqing also has another nickname, "furnace city", not only because of its scorching summers, but also its signature foods: spicy hotpot that enjoys a reputation nationwide as well as abroad in countries like Japan, the US, and Russia.

Lightning flashes illuminate the sky over the skyscrapers and high-rise buildings in a rainstorm in Chongqing, China, April 5, 2018. [Photo/IC]