202 1 changxia is a brief introduction to changxia.

2. Long summer is the seventh solar term among the twenty-four solar terms, and it is also the first solar term in summer. Every year, the festival is held on May 05-07 in the Gregorian calendar. At this time, the bucket handle of the Big Dipper points to the southeast, and the longitude of the sun reaches 45. Long summer is an important solar term, marking the peak season for the growth of all things. Almanac: "The bucket refers to the southeast dimension and the long summer. Everything has grown up since then, so it is named Long Summer. " After the long summer, the sunshine increases, the temperature rises gradually, the thunderstorm increases, and the crops enter a vigorous growth stage.

3. The long summer is also the beginning of Mitsuki. "The bucket refers to the southeast, and the dimension is long in summer. Everything grows here, hence the name Long Summer. " "Summer" in long summer means "big", and "long summer" means that plants sown in spring have grown upright at this time. Spring, long summer, autumn harvest and winter storage, summer is the best season for many crops to grow vigorously. In the long summer, everything is thriving. Because China has a vast territory and a large span from north to south, natural rhythms vary from place to place. In the long summer season, only the area south of Fuzhou-Nanling line in China is the real summer of "the trees are dark and the days are long, and the balcony reflects into the pond"; And parts of the northeast and northwest just have the breath of spring at this time.