Today is summer. What does "Chu" mean here?

Summer is one of the 24 solar terms. The summer solar term is on August 23rd or 24th every year, when the sun reaches longitude 150.

According to the "twenty-four solar terms", "go and go again, and the summer heat ends here." It means that the hot summer is coming to an end, that's all. Around summer, the average daily temperature in the vast areas east and south of Beijing, Tai, An, Cheng and Gui in China and the Tarim Basin in Xinjiang is still above 22 degrees Celsius, which is in summer, but at this time, the cold air in the south is increasing and the temperature is gradually decreasing. After the summer, except South China and Southwest China; The rainy season will end in most parts of China, and the precipitation will gradually decrease. Especially in North China, Northeast China and Northwest China, we must pay close attention to water storage and moisture conservation. If there is drought during autumn sowing, the sowing date of winter crops will be postponed.