Caffeine in tea can excite the central nervous system, help people cheer up, improve thinking, eliminate fatigue and improve efficiency. Caffeine and theophylline in tea have diuretic effects and are used to treat edema and stagnant tumors. Acute icteric hepatitis can be treated by detoxification and diuresis with black tea syrup.

Caffeine, inositol, folic acid, pantothenic acid and aromatic substances in tea can regulate fat metabolism, especially oolong tea can decompose protein and fat well. Tea polyphenols and vitamin C can lower cholesterol and blood lipids, so drinking tea can reduce weight.

Extended data:

The national standard of Dongting Biluochun tea is divided into five grades: Grade I, Grade II, Grade I, Grade II and Grade III. The temperature of the wok, the amount of leaves thrown and the degree of exertion increased with the decrease of grade. That is, the pot temperature is low, the amount of leaves thrown is large, and the molding force is heavy.

First-class Biluochun, silvery white, dense, slender strings, curled into snails, covered with white hair. After brewing, the soup is green and clear, with rich aroma, fresh and mellow taste and lasting sweetness. The fake "Biluochun" is black, green and dull, and has no fragrance after brewing. The soup is yellow and black, like old tea overnight.

References:

Baidu Encyclopedia-Biluochun