On a hot day, more and more people feel that their physical strength is worse than that in spring, they have no appetite to eat, their sleep quality declines, they are prone to impatience, their feet are particularly sour when climbing stairs, and they are prone to asthma. Traditional Chinese medicine refers to these as fatigue, palpitation, shortness of breath, shortness of breath, dizziness, hot flashes, night sweats, tinnitus, forgetfulness, irritability and insomnia, and attributes them to deficiency of both qi and yin. "There is no disease in summer, and three points are empty." Although people hide in air-conditioned rooms all day and night, they are still surrounded by hot air when they go in and out. There is a folk saying that "men don't make money in June", but now everyone is proud of being busy. No one will slow down in summer, and it is inevitable to be relatively weak in summer. The deficiency in summer is mainly qi deficiency and yin deficiency. Traditional Chinese medicine believes that the human body is a dynamic and balanced system. When your qi, blood, yin and yang are balanced, your body is healthy. Western medicine says that when your immune function is normal, you are unlikely to get sick. The reason is the same. Due to various reasons, the human body can suffer from the following seven kinds of deficiency: the fourth is deficiency of both yin and yang and qi and blood, and the third is deficiency of both qi and yin, deficiency of both qi and blood and deficiency of both yin and yang. Among these seven types, qi deficiency, yin deficiency and deficiency of both qi and yin account for a large proportion. Nowadays, in this fast-paced society, people consume a lot of healthy energy, work hard and are miscellaneous. Middle-aged and elderly people often have qi deficiency, yin deficiency or both qi and yin deficiency. Among them, mental fatigue, palpitation and shortness of breath, shortness of breath and laziness belong to qi deficiency symptoms; Dizziness, hot flashes, night sweats, tinnitus, forgetfulness, irritability and insomnia are all symptoms of yin deficiency. Specifically, yin deficiency is mainly manifested as emaciation, irritability and bad temper; Often thirsty, like to drink cold drinks; Night sweats, sweating, fever in hands and feet; Yellow urine, red tongue, dry stool and constipation; His face is often red and hot; Poor sleep, etc.