Why is Nanchang one of the four furnaces?

"Three Fireplaces": During the Republic of China, Chongqing, Wuhan and Nanjing were famous big cities along the Yangtze River, and the temperature was hot in summer, so they were called "Three Fireplaces".

"Four Fireplaces": Nanchang, Chongqing, Wuhan and Nanjing, four cities with hot summer climate in the Yangtze River basin, are called "Four Fireplaces". Nanchang is the hottest and windless city among the four stoves.

Others say that Chongqing, Wuhan, Nanjing and Jinan are the four furnaces.

"Seven Fireplaces": Nanchang, Chongqing, Wuhan, Nanjing, Changsha, Hangzhou and Shanghai at the latitude of the Yangtze River are called "Seven Fireplaces".

The saying of Kitchen Stove City originated from the folk, and was first written as "Turpan, Wuhan, Jinan and Nanjing" in middle school geography textbooks.

There is also a saying that Wuhan, Nanjing, Chongqing and Nanchang.

"Four great stoves"

People often refer to Wuhan, Nanjing, Chongqing and Nanchang as the "four furnaces" in China. From the analysis of historical meteorological data, these four cities have high temperature in summer, high temperature at night and high air humidity.