Why is it always warm and humid in the south?

The climate zone is different: the south belongs to subtropical tropical monsoon climate, with hot and rainy summer and mild and dry winter. The climate characteristics are different: the climate in the south is characterized by high temperature and rainy summer, cold and dry winter, and the rain and heat are the same. There are four distinct seasons throughout the year and the weather is changeable. With the increase of latitude, the temperature amplitude in winter and summer increases correspondingly, while the precipitation decreases gradually. Climatic characteristics of the north: Climatic characteristics: high temperature and rainy in summer, mild and little rain in winter, with rain and heat in the same period.