Rhizoma Polygonati. Part used: Rhizome. Known as Solomon's Seal Rhizome. Entering meridians: Kidney, Lung and Spleen. Huang Jing tonifies spleen Qi, nurtures stomach Yin, moistens Lung Yin, tonifies the kidneys, strengthens Jing and relieves wasting and thirsting. All Phoenix Medical dry authentic herbs and concentrated herbal granules are free of sulphur, herbicides and pesticides.