As the saying goes, it's cold in three or nine days, and hot in three days. Nine days of freezing, for our friends in southern China, may not be so profound; But it's extremely hot in the dog days, so they have a lot to say. Then let's understand, do summer days begin with the summer solstice solar terms?

You may like how to fish around the summer solstice.

Q: Does the summer solstice start counting volts?

No, it's the third Geng day after the summer solstice.

"Fu" means being forced to hide underground by Yang Qi. It is dog days every year, which is the hottest time of the year. Starting from the summer solstice, according to the arrangement of dry day and branch day, the third Geng Day is the first time. The fourth Geng Day is Zhongfu, and the first Geng Day in beginning of autumn is the first day of the last ten days.

During the Qin and Han Dynasties in China, the theory that "the five elements coexist" prevailed. It was believed that the hottest day in summer was fire, while Geng was gold, and gold was afraid of being melted by fire (fire would overcome gold). Therefore, in Gengri, gold will be hidden. Therefore, it is stipulated that the first volt (10 day) starts from the third Geng day after the summer solstice, the second volt (10 day in some years and 20 days in some years) starts from the fourth Geng day after the summer solstice, and the last volt (10 day) starts from the first Geng day after beginning of autumn.

When there are four Geng days between the summer solstice and beginning of autumn, the midsummer lasts 10 days, and when there are five Geng days, the midsummer lasts for 20 days. So from midsummer to the end of summer, it sometimes lasts as long as 10 days, and the first and second days are 10 days.

"Geng" on Geng Day is the seventh word in the ten-day work of "A, B, C, D, E, Ji, G, Xin, Ren and Gui", which is repeated every ten days on Geng Day. The starting and ending time of the summer solstice is different every year, roughly from mid-July to mid-August, but it is certain that the third Geng day from the summer solstice is the summer solstice, and the summer solstice is also the third Geng day after the summer solstice.

The arrival of dog days means the hottest climate stage of the year. It is suggested that netizens should not only pay attention to heatstroke prevention and cooling, but also take care of moldy things at home and strengthen drying.