Kidney essence tea: According to Compendium of Materia Medica, there is tea in Kanto called kidney essence. Drawing on the aura of heaven and earth, the essence of the sun and the moon, nourishing yin and tonifying the kidney, consolidating the foundation and cultivating the yuan, and looking at the famous teas in the world, it is really a rare treasure, ranking first in the world. "The kidney essence tea mentioned here grows on the sunny side of the northern slope of the southern foot of Guangding Mountain in Taiping Town. It is a perennial herb, shaped like bamboo leaves, dark green, long and narrow, with yellow spores on the back of leaves. Each plant has 5-7 leaves without vines, and the leaves are 6-9 cm long and 1 cm wide. It has aura, snows and blooms in winter, and grows in the crevices of steep cliffs.