Why is Chongqing so hot?

The main reason is that the high altitude in summer is controlled by the subtropical high zone; The second is the influence of topography. Chongqing, Wuhan and Nanjing are all located in the lower Yangtze River basin. The topography of the valley is like the bottom of a pot, surrounded by mountains, and the ground is difficult to dissipate heat, which makes the temperature rise continuously. Third, these places are densely covered with rice fields, with a lot of water vapor and high humidity. People are not easy to evaporate after sweating, and the heat dissipation efficiency of sweating is greatly reduced. High temperature and humidity make people feel sultry.