During this period, many areas in the south have experienced high temperatures, with the highest temperature reaching 40 ℃. The Central Meteorological Observatory predicts that there will still be sustained high temperatures in Jianghan, Jianghuai, Jiangnan, eastern Sichuan Basin and other areas in the coming week. Why is the temperature still high even though it has been twenty days since the beginning of autumn? The meteorological department stated that this is what people often refer to as the 'autumn tiger'. Patients with cardiovascular and cerebrovascular diseases who experience large temperature differences between day and night need to take precautions. Tang Wei'an, a senior engineer at the Anhui Provincial Climate Center, said that "autumn tiger" is not a professional term in meteorology, but a folk metaphor. It usually refers to a period of continuous high temperature weather above 35 ℃ during the transition from summer to autumn, when the temperature drops and then suddenly rises again, or when the high temperature remains above 35 ℃ throughout the transition from summer to autumn. Experts say that after the beginning of autumn, as the summer monsoon weakens and precipitation decreases, air humidity significantly decreases. The body sensation will gradually shift from the humid and hot summer to dryness. But in the middle and lower reaches of the Yangtze River, under the continuous control of subtropical high pressure, the temperature often does not significantly decrease until mid September. Tang Wei'an, Senior Engineer at Anhui Provincial Climate Center: One of the main reasons for the occurrence of the "autumn tiger" is the abnormal control of the subtropical high. During the southward retreat of the subtropical high in autumn, it periodically moves northward, blocking the southward movement of cold air from the north under the control of the subtropical high, resulting in clear skies with few clouds, strong sunshine, and temperatures maintained above 35 ℃. The reporter learned that the temperature difference between day and night during the "autumn tiger" period can easily induce cardiovascular and cerebrovascular diseases, with a particularly significant impact on the elderly population. Doctors remind people with underlying diseases to pay special attention to maintaining healthy and regular lifestyle habits. Tao Chunrong, Deputy Chief Physician of the Neurology Department at the First Affiliated Hospital of the University of Science and Technology of China: If you supplement with water every day, it should be at least 1500 to 2000 milliliters. Sometimes you need to drink a small amount of water, don't wait until you are thirsty to drink water. People with basic diseases such as hypertension and diabetes should take medicine regularly and monitor blood pressure and glucose in time. Autumn dryness and fatigue strike, appropriate exercise and healthy diet. In the "autumn tiger" weather, with high temperature and low humidity, there is a large temperature difference between day and night, and the human body's regulatory system is prone to imbalance. As a result, people with weaker digestive systems often experience symptoms such as decreased appetite or diarrhea, and the number of patients with cough and asthma begins to increase, which is also known as autumn dryness. Xu Yuanyuan, Deputy Chief Physician of the Department of Traditional Chinese Medicine at the First Affiliated Hospital of the University of Science and Technology of China: Autumn dryness is caused by excessive loss of water in the body during autumn, resulting in dry hair, dry skin, and easy itching. Then it is easy to feel dry mouth and throat. If there are some things that are prone to internal heat, he will feel coughing, and the phlegm will be sticky and yellowish, which is slightly warm and dry. In addition, during the "autumn tiger" weather, people are prone to fatigue and lack motivation to do things. This is what people often talk about as' autumn fatigue '. Xu Yuanyuan, Deputy Chief Physician of the Department of Traditional Chinese Medicine at the First Affiliated Hospital of the University of Science and Technology of China: Nowadays, due to the increasing pressure of the pace of life, coupled with the fact that in autumn, if one does not receive good nutritional supplements in their diet and stays up late at night, their resistance will be insufficient during the day, resulting in obvious fatigue and weakness. After the beginning of autumn, many people begin to habitually "stick on autumn fat". Experts suggest that excessive "autumn supplementation" should be prevented. Xu Yuanyuan, Deputy Chief Physician of the Department of Traditional Chinese Medicine at the First Affiliated Hospital of the University of Science and Technology of China: Many people talk about "sticking to autumn fat", but it is not suitable for everyone. Because there are fewer people suffering from malnutrition and more people suffering from overnutrition. In the season of "autumn tiger", it is still recommended that everyone eat light food, such as beef and mutton, which should be eaten less. Fruits that are prone to overheating, such as longan, lychee, and tropical fruits, which are prone to overheating, should be eaten less. Doctors suggest that in the face of the "autumn tiger" weather, the public should maintain moderate physical exercise, and their diet should focus on nourishing dryness, clearing nutrients, and strengthening the spleen and lungs. Xu Yuanyuan, Deputy Chief Physician of the Department of Traditional Chinese Medicine at the First Affiliated Hospital of the University of Science and Technology of China: For seasonal ingredients in autumn, I recommend eating more grains and cereals. If you are already experiencing dry cough and phlegm due to high levels of dryness and evil, do not peel off pears while eating them. In fact, from the perspective of traditional Chinese medicine, pear skin is a good medicinal herb for relieving cough. (New Society)