When did the long summer begin? When did the long summer begin?

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 indicates the official start of summer. The time is May 5 or May 6 of the Gregorian calendar every year. 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, indicating the change of seasons and the beginning of summer. Before and after the "Long Summer", only the area south of Fuzhou-Nanling line in China is the real summer when trees and dark balconies reflect the pond, while some areas in the northeast and northwest have just entered spring at this time, and the average temperature in most parts of the country is around 18 ~ 20℃, which is the mid-spring and late-spring season of "all kinds of flowers compete for each other". In May, Sophora japonica blooms in many places.