Twenty-four solar terms-the origin of cold dew, how did cold dew come from?

Twenty-four solar terms-the origin of cold dew, how did cold dew come from?

Cold dew solar terms are one of the 24 solar terms. The origin of the 24 solar terms in China is also recorded.

The origin of the twenty-four solar terms:

The current 24 solar terms come from the method of dividing according to the longitude of the sun more than 300 years ago, and have been used ever since 1645. However, in the lunar calendar from the constitutional calendar to the present, the 24 solar terms are determined according to the position of the sun on the ecliptic (the degree of the longitude of the sun), that is, on a 360-degree circle of the ecliptic (the apparent path of the sun on the celestial sphere for one year), it is divided into 24 equal parts, each 15? One copy, with the spring as the starting point of 0 degrees, arranged according to the degrees of the yellow meridian. That is, the sun starts from the vernal equinox, that is, the longitude of the Yellow River is zero. At this moment, the sun shines vertically on the equator, and every advance of 15 degrees is a solar term; A week after the operation, I returned to the vernal equinox, which is a year of return. Twenty-four solar terms are exactly 360 degrees, and every time the sun runs the ecliptic, it is a solar term of 15 degrees.

The origin of cold dew solar terms:

Cold dew is the end of the full moon in the dry calendar and the beginning of the full moon. At night, looking up at the starry sky, you will find that the seasonal change of the starry sky means that the big Mars (antares of Scorpio) in midsummer has set in the west. As soon as the cold dew passed, the height of the sun continued to decrease and the temperature gradually decreased. Compared with the solar term of Bailu, the temperature of cold dew has dropped a lot, and the dew on the ground is colder, which is likely to become frozen dew, so it is called cold dew. "Twenty-four solar terms" said: September solar terms, cold dew, will condense. At this time, the temperature is lower than the white dew, and there is much dew, so it is cold and freezing, hence the name cold dew.

What should we pay attention to in the cold dew solar term movement?

It is necessary to exercise properly in the cold dew solar terms.

Exercise can strengthen the body, and to some extent, it can drive away the lack of autumn, but excessive exercise intensity will aggravate the fatigue of the human body. In the cold and dew season, due to the crisp autumn air, we should do some soothing exercises close to nature, such as brisk walking and climbing mountains, which can not only restrain our minds, but also achieve the purpose of exercising.

Generally speaking, people's mood is not stable in autumn, and they are easily agitated or sad, especially in the late autumn when flowers and trees are dying and the autumn wind is bleak, which often makes some people (especially the elderly) feel depressed and depressed. Therefore, autumn health care should pay attention to emotional adjustment, cultivate optimism and maintain psychological balance.