The pronunciation of Chushu is the third tone.

Sushu is one of the twenty-four solar terms. The solar term falls on August 23 or 24 every year and is a solar term that reflects changes in temperature. "Chu" means end, indicating that the heat is about to pass, the heat will end on this day, and the temperature will gradually drop in most parts of China.

Sushu is different from minor heat and major heat, as well as minor cold and major cold. It is a solar term that represents the transition from hot to cold.