Eating jiaozi on the day of sleeping can drive away cold, bring hot air and protect health. Besides, eating jiaozi has the meaning of reunion, reminding people to cherish their families and live a happy life.
At the same time, jiaozi is also a kind of nutritious food, which can provide human body with protein, fat, vitamins and minerals. Eating jiaozi can also provide enough energy and nutrition for the body and help people spend the hot summer.
Entering volts means entering "three volts". There is a folk proverb, "The first night falls in summer", which is the basis for establishing the first autumn. The almanac stipulates that "the number of volts starts from the third day of summer", that is to say, "it starts to count down from summer" and begins to fall on the third "Geng Day".
Three volts statement:
"Three volts" refers to the first, middle and last three volts, which is about mid-July to mid-August. After the summer solstice, although the days are getting shorter and the nights are getting longer, the days are longer than the nights in a day. Every day, the ground absorbs more heat than it emits, and the temperature near the ground is getting higher every day.
During the "three volts" period, the ground absorbs almost more heat than it emits, and the weather is the hottest. After that, the heat absorbed by the ground began to be less than the heat emitted by the ground, and the temperature gradually decreased. Therefore, the hottest time of the year generally appears in the "three volts" summer solstice.
According to the traditional calendar, the third day after long summer entered the first stage, the fourth day entered the middle stage, and the first day after beginning of autumn entered the final stage, which are collectively called "dog days". The first and last days are 10 days, and the middle days are sometimes 10 days and sometimes 20 days. The length of accommodation is not fixed every year, and the length of accommodation is also different. You need to look up the almanac to calculate, which can be simply expressed by the four-word formula of "Summer Solstice Day Three Geng".