Tieguanyin belongs to oolong tea, which is produced in Anxi County, Quanzhou City, Fujian Province. Invented in 1725- 1735, it is the representative of oolong tea, one of the top ten famous teas in China. Between green tea and black tea, it belongs to semi-fermented tea. It is one of the six famous teas in China, including green tea, black tea, green tea (oolong tea), white tea, yellow tea and black tea.

2. The efficacy and function of Tieguanyin.

(1) People who often drink Tieguanyin will feel that the harm of alcohol and tobacco is gradually disappearing, and they no longer want to eat greasy food, and their spirits are better. The polyphenols in Tieguanyin can reduce blood lipids, triglycerides and cholesterol, and the subcutaneous fat and waistline of obese people are reduced, so their weight is naturally light.

(2) Anti-cancer catechin (EGCG) has strong anti-cancer activity. Tea polyphenols are the main active ingredients of anti-cancer and play an important role in preventing cancer. In addition, vitamin C and vitamin E in Tieguanyin can block the synthesis of nitrosamines, which plays a great role in the prevention and treatment of cancer.

(3) Tea polyphenols, the effective component of anti-aging Tieguanyin, can not only improve the function of lipolytic enzyme, but also promote the metabolic activity of neutral lipase in tissues. Therefore, drinking Tieguanyin can improve the body shape of obese people, effectively reduce the subcutaneous fat and waist circumference of obese people, and thus lose weight.

(4) Tea polyphenols in Tieguanyin can not only reduce cholesterol in blood, but also significantly increase the ratio of high-density lipoprotein to low-density lipoprotein in blood. Caffeine has certain preventive and therapeutic effects on cardiovascular and cerebrovascular diseases such as coronary heart disease, hypertension and arteriosclerosis.

(5) Fluoride in Tieguanyin tea for preventing dental caries can easily combine with calcium in teeth, forming a layer of calcium fluoride on the surface of teeth, which plays a role in preventing acid and caries. It can be seen that drinking Tieguanyin has a preventive effect on people without dental caries and a therapeutic effect on people with dental caries.

(6) Prevention and treatment of diabetes Drinking Tieguanyin regularly can replenish vitamin B 1, pantothenic acid, phosphoric acid, methyl salicylate and polyphenols in human body in time, which can prevent the occurrence of diabetes. For patients with moderate and mild diabetes, blood sugar and urine sugar can be reduced to very little or completely normal; For patients with severe diabetes, it can reduce blood sugar and urine sugar and relieve various main symptoms.