I. Six Taboos of Oolong Tea

1. Avoid drinking large amounts of tea right before or after meals. The correct practice is to drink tea one hour after a meal, and it should not be too strong.

2. People who are physically weak, malnourished, or anemic should avoid drinking tea.

3. Patients with urinary stones should avoid drinking tea.

4. Avoid drinking tea before bedtime.

5. Avoid drinking overnight tea.

6. Avoid drinking spoiled tea or the first infusion of tea.

II. Taboos of Pu'er Tea

1. Avoid drinking strong Pu'er tea on an empty stomach. It should be drunk at an appropriate time depending on the individual.

2. Pu'er tea should be drunk immediately after brewing. Avoid drinking tea that has been steeped for too long, and do not drink overnight Pu'er tea.

3. Freshly made Pu'er tea should not be consumed in large quantities.

4. Keeping tea utensils clean is very important; do not forget to wash your teacup regularly when drinking Pu'er tea.

5. Pu'er tea is best enjoyed in variety, not exclusively.

6. Pu'er tea is suitable for long-term consumption, not intermittently.

7. Pu'er tea should be drunk warm, not scalding hot or cold.

8. Pu'er tea should be drunk weak, not strong.

9. Avoid drinking large amounts of Pu'er tea right before or after meals.

10. Drink Pu'er tea in moderation before bedtime.

11. Avoid drinking poor-quality or spoiled tea.

12. Avoid drinking Pu'er tea that has been steeped too many times.

III. Taboos of Green Tea

Avoid drinking the first infusion of tea:

1. Because tea leaves are contaminated with pesticides and other harmful substances during cultivation and processing, there is always some residue on the surface of the leaves.

2. Avoid drinking tea on an empty stomach: Drinking tea on an empty stomach can dilute gastric juices, reduce digestive function, and cause a large amount of undesirable components from the tea to enter the bloodstream, leading to symptoms such as dizziness, palpitations, and weakness in the limbs.

3. Drink less new tea: Because new tea has a short storage time, it contains higher levels of unoxidized polyphenols, aldehydes, alcohols, and other substances that can strongly irritate the gastrointestinal mucosa and easily induce stomach problems. New tea stored for less than half a month should be avoided.

4. People with a cold stomach should not drink too much, as excessive consumption can cause gastrointestinal discomfort. People with neurasthenia and insomnia should not drink tea before bed. Nursing mothers should also drink less tea, as tea has a收敛 (astringent) effect on breast milk.

5. Do not take medicine with green tea, and avoid drinking overnight tea. The tannic acid in green tea can combine with many drugs to form precipitates, hindering absorption and affecting efficacy.

IV. Taboos of Chrysanthemum Tea

1. People with spleen and stomach deficiency-cold should drink less. When making tea with chrysanthemums, it is not advisable to drink it continuously for a long time; generally, 3-5 days is appropriate. People with a cold constitution might consider adding some goji berries.

2. People with阳虚 (yang-deficient) constitution should not drink chrysanthemum tea frequently. If they persistently drink chrysanthemum tea, which has the effect of clearing heat and purging fire, it can easily damage vital energy, making them weaker. Especially for people with spleen and stomach deficiency-cold, drinking too much cool-natured chrysanthemum tea can easily cause stomach discomfort and lead to acid reflux. It is evident that using chrysanthemum tea to reduce fire and clear heat also requires selection and cannot be applied uniformly to everyone.