Summer in dog days and winter in dog days.

Dog days in summer and March 9th in winter are as follows:

One hundred and twenty-nine, fans never leave. Ice water is as sweet as honey. It's 4936, and you're sweating like a pig. Five, nine, four, fifteen, wearing autumn leaf dance. 6954, enter the Buddhist temple to enjoy the cool. 7963, look for sheets by the bed. 8972, consider covering the quilt. 998 1, please play with charcoal.

Dog days introduction:

The dog days, which appear between the summer heat and the summer heat, are the period with the highest temperature, the highest humidity and the most severe sultry heat in a year. Three volts can be divided into initial, middle and final volts, and its date is determined by the coordination of 24 solar terms and the dates of dry and branch. After "entering the volt", many places in the country will enter the continuous high temperature mode.

According to the traditional almanac, the number of volts will be counted from the third Geng day of the summer solstice, that is to say, from the summer solstice to the third Geng day, it will begin to fall. Gengri here refers to the days prefixed with Geng in the ancient Ganzhi Jiri law. Fu means being forced to hide underground; This also means that it is too hot to move.

The length of dog days mainly lies in the difference between middle and next days. Due to the different time of the third Geng day after the solar term from year to day, the number of days in the middle is also different. The incubation time is long or short, which may be 10 day or 20 days.

Dong Sanjiu introduced:

March 9 in winter refers to the third nine days from winter to the future, and the time is about the middle and late period of 1. People will call it the coldest period in winter. Why do people think winter is the coldest? In fact, it is calculated according to the heat absorbed and emitted by the ground, because the days are short in winter, the ground absorbs less solar radiation heat and emits more heat.

Only after March 9 in winter does the temperature near the ground begin to rise gradually, so March 9 after the winter solstice is the coldest time of the year. Three or nine days in winter is the lowest temperature in a year, so we should pay attention to keep warm and avoid diseases such as colds and fever.

March 9th in winter is also a high season for chronic bronchitis, asthma, allergic rhinitis and other diseases, but it is also a good time to treat these diseases. Therefore, during March 9 in winter, we should strengthen our physique, exercise more and avoid sedentary. The benefits of physical exercise can strengthen the digestive ability of the stomach, make metabolism vigorous, improve physical condition and enhance resistance.