1, summer solstice is one of the 24 solar terms. Every year on June 2 1 or 22 of Gregorian calendar, the sun moves to 90 degrees of the yellow meridian, which is the summer solstice. At this time, the position of the sun directly on the ground reaches the northernmost point of the year, almost directly on the Tropic of Cancer, and the sunshine time in the northern hemisphere is the longest. After the summer solstice, Yin Qi began to grow and Yang Qi began to decline.

2. "But the summer solstice is not hot" and "The summer solstice is the head of the third watch" Although the summer solstice indicates that the hot summer has arrived, it is not the hottest time. After the summer solstice, the temperature will continue to rise for some time, and about twenty or thirty days is the hottest weather.

3. The traditional foods eaten from summer solstice are: cold noodles, porridge, summer solstice soup, wonton, hot noodles and so on. In the past, old Beijing had the habit of eating cold noodles during the summer solstice. Eating these raw and cold foods can effectively help reduce fire and stimulate appetite. On the day of summer solstice, Wuxi people will eat porridge as breakfast, which can effectively alleviate the loss of appetite during the "bitter summer". People in Changsha eat dumplings made of glutinous rice flour and mouse grass on the summer solstice, which is called "summer solstice soup".