What is the Great Heat solar term and what is its origin?
Introduction: The Great Heat solar term is one of the 24 solar terms. The arrival of the Great Heat solar term indicates that the weather will become hotter. So what is the Great Heat solar term and what is its origin? The sixth month of the lunar calendar is the season when lotus flowers begin to bloom, and lotus flowers are the messenger of June. If you want to know about the sixth lunar month of 2018, please consult the fortune teller website.What is the Great Heat solar term?Great Heat is one of the 24 solar terms in the lunar calendar, when the sun is at 120° of the ecliptic longitude. During the Great Heat period, Chinese people have the customs of drinking Fu tea, drying Fu ginger, burning Fu incense, and drinking mutton soup."Collected Explanations of the 72 Seasonal Changes" says: "The Great Heat is in the middle of June. Heat is hot and can be divided into small and large heat. The beginning of the month is small, the middle of the month is big, and the heat is still big now." Its climatic characteristics are: "When the Big Dipper points to Bing, it is the Great Heat. At this time, the weather is much hotter than the Lesser Heat, so it is named the Great Heat." The Great Heat solar term is around the middle of the "Three Hot Days", the hottest period of the year, with the highest temperature and the fastest growth of crops. At the same time, various meteorological disasters such as drought, flood and wind disasters are also most frequent in many areas. What is the origin of the Great Heat solar term?The "Great Heat" solar term occurs between July 22 and 24 every year when the sun reaches 120° of the ecliptic longitude. "Great Heat" and "Minor Heat" are both festivals that reflect the degree of heat in summer. "Great Heat" means extreme heat. "Collected Explanations of the 72 Seasonal Changes" states: "In the middle of June,...heat is divided into small and large heat. The beginning of the month is small, the middle of the month is large, and the heat is still large now." This is around the "middle of the dog days", when most parts of the country enter the hottest period of the year and it is also the fastest growing period for warmth-loving crops. However, natural disasters such as drought, flood, and typhoon occur frequently, and there are tasks such as drought resistance, flood drainage, typhoon prevention, and field management.In ancient my country, the Great Heat was divided into three stages: "The first stage is that rotten grass turns into fireflies; the second stage is that the soil becomes moist and the heat is humid; the third stage is that heavy rains occur from time to time." There are more than 2,000 species of fireflies in the world, which are divided into aquatic and terrestrial. The terrestrial fireflies lay eggs on dead grass, and during the Great Heat, the fireflies eggs hatch, so the ancients believed that fireflies turned from rotten grass; the second stage is that the weather starts to become hot and humid, and the land is also very humid; the third stage is that heavy thunderstorms often occur, and these heavy rains reduce the heat and humidity, and the weather begins to transition to the Beginning of Autumn. In order to fully reflect the changes in seasonal climate, ancient astronomers used the "gnomon" method to measure the sun's shadow as early as the Zhou Dynasty and the Spring and Autumn Period to determine the vernal equinox, summer solstice, autumnal equinox, and winter solstice. According to the changes in the sun's position on the ecliptic and the resulting evolution of the ground climate throughout the year, the whole year was divided into 24 equal parts and each part was named. This is the origin of the 24 solar terms. |
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