Being in the heat is "out of the heat", that is, out of the heat. The dog days include four solar terms, namely, slight summer heat, great summer heat, beginning of autumn and early summer. At this point, the dog days have passed or come to an end, and the summer heat in early autumn will also end. "Three summers" and "three volts" both represent high temperature and extreme weather, and the curves on the time axis and the temperature axis are basically the same: summer comes, summer comes; When the sky falls, summer is over.

The Twenty-four Solar Terms written by Wu Cheng, a scholar in the Yuan Dynasty, said, "The summer ends here." It means that the summer heat will end on this day, thus starting the best autumn of the year.

The ancients divided the heat into three periods:

Eagle is a kind of sacrificial bird. Eagle preys on many birds.

Second, the earth began to fade, and everything between heaven and earth began to wither.

Third-class crops are planted, and various crops begin to mature.

Summer customs:

1, ancestor worship:

In the old days, there was a ceremony to open the gate of hell from the beginning of July until the gate of hell closed at the end of the month, and Purdue giving activities were held. . Today, it has become the main activity time for ancestor worship.

2. Travel to welcome autumn:

After the summer heat, autumn is getting stronger and stronger. People always say "See a clever cloud in July and August", which means "Go out to welcome autumn".

3. River lamp:

River lanterns, also known as "lotus lanterns", usually put lights or candles on the base and put them into rivers, lakes and seas during the Mid-Autumn Festival to let them float to ferry ghosts such as drowning ghosts in the water.

4. Fishing Festival:

During the summer vacation every year, the annual grand fishing festival will be held along the coast of Zhejiang Province to send fishermen out to sea.

The above contents should be combined with the actual situation for reference only.