What does summer heat mean?

The explanation of summer heat is as follows:

Summer is the fourteenth solar term among the twenty-four solar terms and the second solar term in autumn. Dou Zhiwu (Southwest); The solar meridian reaches150; August 22-24 of the Gregorian calendar every year. Summer has arrived, which is the "last summer" in the "three summers" of hot and hot weather, which means that the hot and difficult weather is coming to an end.

Historical origin:

Entering summer is a solar term that reflects the change of temperature. The original meaning of "going out" means "stopping" and "staying". Shuo Wen Jie Zi says, "Stop." "Summer heat" means that the unbearable hot weather has ended and the summer heat has begun to fade. Both "three summers" and "three volts" represent hot and humid weather, and the curves on the time axis and the temperature axis are basically the same: summer is coming, summer is coming; When the sky falls, summer is over.

Meteorological changes:

After summer, the temperature gradually decreases and the temperature difference between day and night gradually increases, but the temperature is still high during the day. The reasons for this phenomenon are as follows: first, the direct point of the sun continues to move southward, and the solar radiation weakens; Second, the subtropical high moved southward by leaps and bounds, and the Mongolian cold high began to itch to try.

Traditional customs:

1, ancestor worship to welcome autumn:

The folk customs around the summer solar terms are mostly related to ancestor worship and welcoming autumn. Around the summer vacation, there will be folk activities to celebrate "July 30th", commonly known as "July 30th" or "Mid-Autumn Festival". I ching: "repeat the same thing and come back in seven days. It will be fine." Seventh, yang number and days. After the sun between heaven and earth is extinguished, it can be resurrected after seven days. This is how heaven and earth work.

2, eat ducks:

"July and a half duck, August and a half duck", the ancients thought that ducks in the middle of July in the lunar calendar were the most fat and nutritious. In summer, old Beijingers will buy lily ducks to cool off the summer, but in Jiangsu, it's so-called "sending ducks to cool off the summer makes everyone sick" to serve a bowl of duck dishes to their neighbors.

3. River lamp:

River lanterns usually have lights or candles on their bases. Before and after the summer vacation, there will be activities to celebrate the Central Plains, commonly known as "July 30" or "Central Plains Festival", in which river lanterns are put into the water to drift, to mourn the dead and pray for peace.