It has been recorded in ancient times that the six solar terms in summer conform to nature, and Su Wen's Theory of Four Temperaments and Spirits points out: "Summer and March are a beautiful month, and everything is gorgeous. Lying in bed at night and getting up early are insatiable. Don't be angry with your ambition, take Huaying as a show and vent your anger. If you love the outside, this summer should be the way to grow up. On the contrary, it is sad, malaria is coughed in autumn, and there are very few recipients, and it is seriously ill in winter. " It means that in the three months of summer, the sun is shining, the geothermal water is steaming, the atmosphere interacts with the sky, and most plants blossom and bear fruit, so it is the season when everything flourishes. At this time, people should go to bed late and get up early, and don't get angry, so that Yang Can can vent. If you violate this rule, you will hurt your mood. By the sixth solar term in autumn, the human body's ability to adapt to collection will be reduced, and it is prone to cough, malaria and other diseases, and it will be seriously ill when winter comes. Therefore, in the period of vigorous metabolism in the six solar terms in summer, we should pay attention to the external yang of the human body and protect the heart in order to nourish yang and prevent diseases. In Yuan Dynasty, Qiu Chuji wrote "On the News of Taking Health in Summer", saying: "Summer and March belong to fire, and the main thing is to nourish the heart. Fire is strong and bitter, fire can win gold, gold lung, and lung governs pungent. When eating in summer, it is advisable to reduce bitterness and sweeten to nourish the lungs. " It is believed that the weather in the six solar terms in summer is hot and sweaty, and it is easy to damage the yang and the heart and lungs. He said, "You shouldn't enjoy the cool under the eaves, in corridors, in alleys or in broken windows. Although these places are cold, thieves are the most fierce in the wind. However, it is advisable to have a clean room in the virtual hall, a cool water pavilion, a clean and open place, and naturally cool. " It is pointed out that the six solar terms in summer are not suitable for enjoying the cool under the eaves, corridors and alleys, so as to avoid catching a cold and damaging healthy qi. You can choose an open, quiet and cool place with fresh air and circulation to calm your heart and cool naturally. He also said: "Don't lie naked under the stars and moons and fall asleep at the same time, so that people can be fanned to cool down. Although it will be quick for a while, it will be the most affected by the wind. Greedy, sweating, lying in the wind, windy. " We are warned that although the weather is hot in the six solar terms in summer, we must never sleep in the open air, or try to be comfortable for a while, and use a fan to cool down when sleeping. The common cold invades the pores of the skin and is seriously ill. In the six solar terms in summer, everything is thriving and heaven and earth are in harmony. People should go to bed late and get up early, be happy, and exercise properly, so that the yang in the body can be vented to adapt to the "long summer" qi, which is in line with the mechanism of six solar terms nourishing the "long summer".