When choosing Yunnan comfrey, it is best to choose some thick and sturdy ones with thicker skin, purple color, and hard texture with a smaller wooden heart.

Polygala is produced in Northeast, North, Northwest and Central China and Sichuan. It is a perennial herb with a stout taproot and a succulent phloem. Yuanzhi has the functions of calming the nerves, removing phlegm, and reducing swelling. It is used for insomnia, forgetfulness, palpitation, trance, unpleasant expectoration, sore, swollen poison, breast swelling and pain caused by heart and kidney failure.

Traditional Chinese medicine is a treasure of the Chinese nation with a history of more than two thousand years. From the Spring and Autumn and Warring States period to the prosperous and rejuvenated contemporary era, Chinese medicine has left a shining brilliance in the long history of mankind's fi