Introduce the 3oo word of Changxia.

Long summer is the seventh solar term in the twenty-four solar terms of the lunar calendar and the first solar term in summer, which marks the official start of the season in Xia Meng. When the sun reaches 45 degrees of the yellow meridian, it is a long summer solar term. The bucket refers to the southeast, and the dimension is long in summer. Everything has grown to this day, hence the name Long Summer.

Twenty-four solar terms: Long Summer and April Festival. Make a word to understand spring. Summer, holidays. At this time, everything is fake and big. "

Astronomically, Chang Xia said that bidding farewell to spring is the beginning of summer. When the temperature rises obviously, the summer heat comes, thunderstorms increase and crops enter the peak season, people are used to taking long summer as an important solar term.

Long summer is a solar term established at the end of the Warring States Period (239 BC), which indicates the change of four seasons and the beginning of summer in four seasons.

In fact, according to the standard of climatology, the daily average temperature rises to above 22℃ steadily, starting from summer. Before and after the "Long Summer", only the area south of Fuzhou-Nanling Line in China is really "the trees are dark in midsummer, and the balcony reflects the pond", while some areas in the northeast and northwest have just entered the spring, and the average temperature in most parts of the country is around 18 ~ 20℃, which is ". In May, Sophora japonica blooms in many places. In the long summer, everything is thriving.