In winter, many trees in the village lose their leaves. These leaves are used for cooking pots or spreading fertilizer in the fields, but one kind of leaves is not only reluctant to throw away, but also turns waste into treasure, which is called "fairy leaves". This kind of leaves is more expensive after frosting, and it is used to make tea, which has the effects of clearing away heat, reducing fire, moistening lung, relieving cough, resolving phlegm and removing fire. Especially the headache and dry cough caused by cold, has a very therapeutic effect. Farmers call the tea brewed with this leaf "fairy tea". This kind of tree is a rare mulberry in Tunzi. Ye Nong called it "immortal tea", which only has value after frosting, and is the bane of "poverty and disease"

Mulberry is a precious economic tree species. Maybe young people in the city are not familiar with mulberries, but they may have eaten all the sweet and juicy mulberries. Mulberry is the fruit of mulberry in spring. Mulberry is a treasure with dense branches, and it is a good furniture wood. Young mulberry leaves can be used to raise silkworms, and fermented mulberry leaves can be used as feed for livestock and fish.

It is not unusual that everyone eats mulberry leaves. Mulberry leaves not only can raise silkworms to make feed, but also have high medicinal value. In traditional Chinese medicine, mulberry leaves have the saying that "ginseng is hot and mulberry leaves are clear". But few people know that mulberry leaves can be made into mulberry leaf tea. It is recorded in Compendium of Materia Medica that mulberry leaves can relieve cough and thirst, clear away heat and moisten lung, and enjoy the reputation of "immortal leaves". Drinking a cup of mulberry leaf tea every day after meals has a good effect on reducing the three highs, resisting aging, caring skin and removing spots and slimming.

Mulberry leaves are rich in flavonoids, amino acids, vitamins and various trace elements, which can improve and regulate the metabolism of skin tissues and have anti-aging and anti-fatigue effects. Fresh mulberry leaves are rich in calcium, magnesium, amino acids and vitamins. Mulberry leaves have the effects of lowering blood fat, cholesterol, thrombus and atherosclerosis. In spring and summer, mulberry leaves with thick leaves are picked and kneaded to make mulberry leaf tea.

Mulberry leaves beaten by frost in autumn are called frost mulberry leaves. The nutritional status and function of frosted mulberry leaves are higher than that of spring mulberry leaves. Frosted mulberry leaves are Huang Liang in color, sweet in taste, cold in nature and sweet in taste, and have the effects of moistening lung, drying dampness and dispelling wind and heat. It can be used for treating wind-heat common cold, incipient febrile disease or cough due to lung heat and dryness-heat. Farmers call it "immortal tea".

Mulberry leaf tea tastes sweet. Soaking in water has the effect of clearing away heat and moistening the lungs, especially in inhibiting pigment sedation, which has a good skin beautifying effect and has good consequences for slimming. It is the bane of poverty and poverty.

In winter, the leaves on mulberry trees are covered with frost and snow, and the leaves are as hard as iron after the wind blows. This winter mulberry leaf is also known as the iron fan. "Hundred Herbs Mirror" records that winter mulberry leaves "will be crushed by heavy snow, picked with fine snow the next day, and air-dried through the hanging door. Its color is blue and black, and the wind makes an iron sound, hence the name" iron fan ". Winter mulberry leaves are also called old mulberry leaves and late mulberry leaves. Winter mulberry leaves can not only cure night sweats, but also cure spontaneous sweating, which is known as the "miracle product of sweating".