What part of traditional Chinese astronomy does the 24 solar terms reflect?

The 24 solar terms reflect the ideas of yin and yang and the five elements in traditional Chinese literature, the annual movement of the sun, changes in weather, and the legislative system. The explanations are as follows: 1. The 24 solar terms reflect the annual movement of the sun.

Each solar term begins with the beginning of spring, the beginning of summer, the beginning of autumn, and the beginning of winter, which are determined according to the position of the sun on the ecliptic.

The ecliptic is the earth's orbit around the sun, and these four solar terms are actually signs of the sun's position on the ecliptic.

2. The 24 solar terms also embody the Yin Yang and Five Elements ideas in ancient Chinese astronomy.

Yin-Yang and the Five Elements are basic concepts in ancient Chinese philosophy, and they are used to explain various phenomena in nature.

24 The solar terms are also divided into twelve sections and twelve middles, which reflect the twelve message hexagrams and the twelve priming hexagrams of the yin and yang and the five elements. These hexagrams show the changes in the growth and decline of yin and yang and the growth and restraint of the five elements.

3. The names of the 24 solar terms also reflect some important concepts in ancient Chinese astronomy.

For example, the vernal equinox, autumnal equinox, winter solstice, and summer solstice are the four nodes of the equinox, which reflect the impact of the earth's rotation and revolution on climate.

The solar terms such as rain, Jingzhe, and Qingming reflect the changes in phenology and weather.

4. The 24 solar terms also reflect the calendar system in ancient Chinese astronomy.

There are two main types of calendars in ancient China: the lunisolar calendar and the 24-solar calendar. The 24-solar calendar is an accurate solar calendar that uses the position of the sun to determine the specific time of each solar term.

This calendar system played an important guiding role in ancient agricultural production.

Knowledge related to gases in Section 24 1. Beginning of Spring: It marks the beginning of spring, when everything revives, rain gradually increases, and the temperature gradually rises.

Beginning of Spring is the first solar term after the Chinese Lunar New Year and the beginning of spring.

Rain: Indicates the beginning of rainfall and gradually increasing rainfall, which is beneficial to the growth of crops.

The rain solar term usually occurs after the beginning of spring, marking the end of winter and the arrival of spring.

2. Jingzhe: Jingzhe means that insects have begun to move and spring has arrived.

This solar term marks the further deepening of spring, with the temperature gradually rising and the weather getting warmer.

Vernal Equinox: The Vernal Equinox represents the equinox of day and night and is the middle stage of spring.

After this solar term, the days gradually become longer and the temperature gradually rises.

The vernal equinox is also an important period for spring crop growth.

3. Qingming: Qingming is a festival for worshiping ancestors and a time for sweeping tombs.

This solar term marks the end of spring and the beginning of summer, when the weather becomes warm and humid.

Guyu: Guyu means sufficient rainfall, which is beneficial to the growth of crops.

This solar term marks the end of spring farming and the beginning of summer farming.

4. Beginning of Summer: Beginning of summer marks the beginning of summer, when the temperature gradually rises and the weather becomes hot.

After the beginning of summer, crops grow faster and require more water and nutrients.

Xiaoman: Xiaoman means that summer crops are beginning to mature, but are not yet fully mature.

After this solar term, summer crops begin to be harvested, which is the harvest season.

5. Ear Grain: Ear Grain means that summer crops are mature and ready for harvest.

After this solar term, summer crops require more protection and management to avoid being attacked by pests and diseases.

Mangzhong means that cereal crops with awns can be planted. During this season, the temperature rises significantly, rainfall is abundant, and the air humidity is high, making it suitable for planting late rice and other cereal crops.