Why is Nanchang so hot?

Nanchang is located in the subtropical zone of the northern hemisphere and influenced by the East Asian monsoon, forming a subtropical monsoon climate. The city is rich in heat, abundant in rain and sunshine, and the rain and heat match well in the peak season of crop growth, which provides favorable meteorological conditions for agricultural production and is known as the land of plenty. However, due to the difference of monsoon intensity and advance and retreat in the morning and evening, the temperature changes greatly, the precipitation distribution is uneven, and meteorological disasters such as high temperature drought, low temperature chilling injury, rainstorm and flood occur frequently, which has adverse effects on people's production and life.