The four tones of the Hanyu Pinyin “tang” can be used to summarize the causes of most obese patients. 1, the first sound “tāng” (soup). Many obese people love to drink meat soup, bone soup and even leftover vegetable soup, which contains a lot of fat. Excessive fat intake is the main cause of obesity. 2, the second sound “táng” (sugar). Sweets are the food preferred by many obese people. In addition, many obese people eat a lot of rice and pasta every day (more sugar), less vegetables. Eating too much sugar can cause obesity. 3. The third sound “tǎng” (lying). “It is better to move than to stand, and it is better to stand than to lie” is the credo of many obese people. More static, less movement, consumption is reduced, too much energy intake in the body will become fat and lead to obesity. 4, the fourth sound “tàng” (hot). Many patients like to eat hot meals, they feel that eating hot meals is more flavorful, so they eat fast, when there is a feeling of fullness has been consumed too much food. More intake than consumption is the root cause of obesity.