1, efficacy. Oolong tea has active oxygen, which can improve skin allergy, lose weight, resist tumor and prevent aging. Black dragon tea can help digestion, relieve greasy and stomach. Obese people can drink black tea to reduce blood fat and lose weight, soften human blood vessels and prevent cardiovascular diseases.

2. Name. Oolong tea is the representative of China tea, and it is a semi-fermented tea. Tea juice is transparent and amber, but in fact oolong tea is just a general term, and many different types of tea can be subdivided.