1, the summer of the "summer" is "big" meaning, "summer" means that the plants sown in the spring to this time has grown upright. "Doo refers to the southeast, the dimension is standing summer, everything to this point are growing, so the name of standing summer also." Lixia is the seventh of the twenty-four solar terms, the first solar term of summer.

2, around May 6 every year, the summer, in astronomy, the summer, said the upcoming farewell to spring, is the beginning of summer, people are accustomed to the summer as a significant increase in temperature, heat will be coming, thunderstorms increase, crops into the peak season of growth of an important festival.

3, modern meteorology, to the average temperature of each climate higher than 22 ℃ for the summer, the actual summer time is not the same throughout our country.