The significance of cool breeze to chilling sound

"A cool breeze blows gently" means that after beginning of autumn, people will feel a little cold when it is windy. At this time, the wind is not hot in summer, but it is still hot when it blows to the body; Then there will be fog on the earth in the morning; And cicadas chirping in the shade of trees in autumn also started chirping, which shows that autumn has already started, bringing a slight coolness.

"Cool breeze and cold sound" comes from a solar term saying, which describes the scene of the beginning of autumn. The ancients divided beginning of autumn into three periods, and there was a saying that "the cool breeze came, the dew was born, and cicadas sang".

Cool breeze refers to the north wind, which comes with coolness. In other words, the wind at this time is no longer the hot wind in summer, and the weather begins to turn cold. Bailusheng means: the days get shorter, the nights get longer, and the temperature difference between day and night gets bigger, so fog is generated and dew is formed. The sound of chilling means that the sound of chilling in autumn begins to sing. The cicada began to sing, indicating that the weather was really getting cold. Cicada is the signal of autumn, just as cuckoo is the signal of summer.