In some ancient Chinese literature works, the Beginning of Autumn is divided into three waiting seasons: the first waiting is the arrival of cool wind; White dew in the second hou; The cicadas chirp in the third monsoon. It means that after the beginning of autumn, people will feel cool when the wind blows. The wind at this time is different from the hot wind in summer. Then, there will be fog on the earth in the morning, and the cold cicadas that feel cloudy in autumn will begin to sing. In fact, most places in China from the beginning of autumn to End of heat this period is still hot "dog days", in this "dog days" period there is no "cool wind to", "white dew", "cold cicada singing" and other phenomena. According to the order of the 24 solar terms, after the beginning of autumn, there is also the end of heat, "end of heat" is the meaning of summer, during the beginning of autumn has not yet been summer. The so-called "heat in the three days", the dog days involve Minor heat, Major heat, beginning of autumn, End of heat four solar terms, these are the highest temperature and humid, stuffy period of the year.
