Summer has arrived in the blink of an eye, and the temperature has become extremely hot. The hottest period of summer is called "Sanfu Days". When does Sanfu Days start? Let's find out together!
When does Sanfu Days start?
Sanfu Days is calculated from the day of the summer solstice, using the traditional Chinese calendar system called "Tiangandizhi".
The traditional method of calculating Sanfu Days is to start from the summer solstice and follow the arrangement of the Tiangandizhi days. The third day of the "Geng" group is the beginning of Sanfu Days. The fourth day of the "Geng" group is the middle of Sanfu Days, and the first day of the "Geng" group after the start of autumn is the end of Sanfu Days.
There are three periods of Sanfu Days: the beginning (10 days), the middle (10-20 days), and the end (10 days). It is the hottest time of the year.
What is the meaning of "Geng" group?
The days with the character "Geng" are called "Geng" group days.
The character "Geng" is the seventh character among the ten heavenly stems, which are "Jia, Yi, Bing, Ding, Wu, Ji, Geng, Xin, Ren, Gui". The "Geng" group days repeat every ten days. Starting from the summer solstice and following the arrangement of the Tiangandizhi days, the third "Geng" group day is the beginning of Sanfu Days, the fourth "Geng" group day is the middle of Sanfu Days, and the first "Geng" group day after the start of autumn is the end of Sanfu Days.
What does Sanfu Days mean?
"Fu" means hidden or latent. The "Fu" in "Sanfu Days" refers to the "Fu Xie" or "latent evil" in Chinese medicine.
It specifically refers to the "evil of heat" among the "six evils" (wind, cold, heat, dampness, dryness, and fire). The commonly referred "hot days" or "Sanfu Days" in the lunar calendar are the hottest days of the year.
Why is it so hot during Sanfu Days?
1. After entering Sanfu Days, the surface humidity increases, resulting in more heat absorbed and less heat dissipated each day. The accumulated heat in the surface layer of the earth increases day by day, reaching its peak when entering Sanfu Days, resulting in the hottest weather.
2. In addition, there is more rainfall and higher air humidity during summer. The heat capacity of water is much larger than that of dry air, which is an important reason for the sultry weather. In July and August, the subtropical high-pressure system strengthens, leading to clear skies and less clouds under its control. This allows more sunlight to reach the ground, causing increased ground radiation and hotter weather.
Why do people use Sanfu patches during Sanfu Days?
To take care of their health.
Sanfu patches are a traditional Chinese medicine treatment method that combines acupuncture, meridians, and herbal medicine. It involves directly applying herbal medicine to acupoints, which produces localized chemical and thermal stimulation. This method has the effects of treating and preventing diseases such as allergic asthma, allergic rhinitis, atopic dermatitis, and frequent recurrent colds.
What are the benefits of using Sanfu patches during Sanfu Days?
1. Promotes blood circulation, clears lung meridians, clears lung qi, and alleviates coughing and wheezing. The stimulation of acupoints by the herbal medicine activates the functions of the meridian system, regulating the balance of yin and yang, qi, and blood, to achieve better results with less effort.
2. Regulates the body's state to counteract the damage caused by climate changes and enhances the body's resistance to diseases.
3. Warms and transforms phlegm and reduces lung tissue edema and exudation, reducing local infiltration of eosinophils.
4. Reduces the number of eosinophilic white blood cells in the blood and improves overall physical fitness.
