1. Refreshing: Phoenix Dan Cong tea leaves contain high caffeine and theophylline, which can provide certain stimulation, help people stay awake and improve work and study efficiency.

2. Lowering blood lipid and cholesterol: Phoenix Dan Cong tea leaves are rich in polyphenols, which helps to lower blood lipid and cholesterol and prevent cardiovascular diseases.

3. Anti-oxidation and anti-cancer: Phoenix Dan Cong tea leaves contain a lot of polyphenols, which can resist oxidation and anti-cancer, help to delay aging and improve human immunity.

The disadvantages of drinking Phoenix Dan Cong:

1. Drinking too much is easy to get angry: Fenghuang Dan Cong tea belongs to fermented tea. If you drink too much, it is easy to get angry, and you are prone to oral ulcers, dry mouth and thirst.

2. Caffeine: Phoenix Dan Cong tea leaves contain caffeine, and excessive drinking can easily lead to insomnia, palpitations, headaches and other problems.

3. Affect the absorption of iron: The tea polyphenols contained in Fenghuang Dan Cong tea leaves will affect the absorption of iron by human body, causing anemia and other problems.

It should be noted that Phoenix Dan Cong tea also needs to be drunk in moderation, and excessive drinking may have adverse effects. It is recommended to drink no more than 3-4 cups a day. If you have a special constitution or disease, it is recommended to drink it under the advice of a doctor.