Why is Hainan so hot?

Hainan is the most tropical marine climate in China, with warm climate and abundant rainfall all year round. The annual average temperature is between 23-25 degrees Celsius, and the annual average rainfall of the whole island is above 1600 mm. The sunshine and ultraviolet rays in Hainan are very strong. Judging from the absolute value of temperature, it is far less hot than the four stoves. There is also a strong sea breeze, and the same temperature is cooler than that of inland cities. As soon as the sun goes down, the heat of the day quickly recedes.

I'm not sure about the other three stoves. I have lived in Chongqing for many years, where it is very hot in summer. The temperature difference between day and night is only about 4 degrees, and there is no wind. It can be said that Hainan has never been as hot as Chongqing.

In Hainan, you can throw away the oxygen bag.