Introduction of summer solstice solar terms

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 ancient Chinese divided the summer solstice into three stages: the first stage was the dissolution of antlers, the second stage was the beginning of cicada singing, and the third stage was the birth of Pinellia ternata. The summer solstice is also an important traditional folk festival-"Summer solstice festival". Folk customs include offering sacrifices to gods and ancestors, avoiding summer, eating noodles and zongzi.

4. In summer solstice, besides relieving summer heat and quenching thirst, we should be as calm as possible and pay attention to sleep. The weather is hot and the metabolism of human body is accelerated, so the intensity of exercise should be moderately reduced.

5, high temperature and high humidity season is easy to induce heatstroke, eczema, dysentery and other diseases, health care should pay attention to heatstroke prevention and dehumidification, care for the heart.