Tea picked from tea trees is divided into two seasons. Tea picked around Qingming Festival is called fine tea, which is the basic raw material for green tea, while tea picked in summer and autumn is called coarse tea.

Only "coarse tea" contains abundant and饱满 trace elements, vitamins, and polysaccharides. Just like eating sour apples (unripe) and ripe apples in daily life, their components have undergone a process from quantitative to qualitative change. Therefore, in tea therapy for treating certain diseases, it is emphasized to use "coarse tea". Modern medicine also supports with a large number of biochemical indicators that the content of "coarse tea" is richer than that of fine tea.

What needs to be emphasized here is that "coarse tea" does not refer to inferior tea, but to mature tea leaves as opposed to fine tea, also known as old tea.

There is a misconception that needs clarification. Tea gardens reserved for picking coarse tea are not allowed to pick spring tea. The tea leaves for coarse tea must wait until the mature stage to become the standard raw material for Tibetan tea. The photosynthesis of such tea leaves is more complete. If tea buds are picked first and then coarse tea is picked later, the quality of Tibetan tea will be reduced. Tibetan tea is a typical mature tea. Since it is harvested in summer and autumn, research has found that it provides the richest substances among all types of tea.

Tea does not replace medicine, and medicine does not replace tea

Tibetan tea cannot replace medicine for treating diseases. The so-called "medicine" must be prescription drugs prescribed by a doctor after diagnosis, with clear composition and efficacy, and are regulated products with national drug approval numbers. They are different from "health care products" used for disease prevention and body strengthening in daily life. Tibetan tea has the functions of regulating the stomach and intestines and daily health care. It is a health preservation beverage with regulating and health care functions, which can solve sub-health problems. The health concept of drinking Tibetan tea to reduce medication intake confirms the preventive idea of traditional Chinese medicine: "Medicinal supplements are not as good as dietary supplements, and dietary supplements are not as good as tea supplements."

Modern medicine and ancient Chinese medicine have entered the field of multi-discipline and multi-system. Any single substance participates in solving the huge project of life science. It should be noted that from the ancient Chinese legend of "Shennong tasted hundreds of herbs and encountered seventy-two poisons in one day, and was cured by tea" to the purpose of tea planting ancestor Wu Lizhen, the medicinal effect of tea was discovered. In Li Shizhen's "Compendium of Materia Medica", the medicinal value of tea is very high. That is to say, tea was originally a "medicine". Because of its low toxicity and health preservation function, it was finally designated as a "beverage" by our ancestors. Therefore, although it cannot replace "medicine", medicine cannot replace "tea" either.