Beisha ginseng is sweet, slightly bitter, slightly cold in nature, belonging to the lung and stomach meridians, and its medicinal part is the root. Its effects include nourishing yin and clearing lung, benefiting the stomach and generating fluids, and treating lung yin deficiency, such as dry cough, low phlegm, coughing up blood, dry throat and mute voice, which is stronger than that of Salvia divinorum. It can also be used to treat stomach yin deficiency, such as dry mouth, excessive drinking, hunger, dry stools, glossy tongue or red tongue with little moss, little fluid, stomach pain, dry vomiting, etc. It can also tonify the qi and dissolve phlegm, treating phlegm that is sticky and not easy to cough out. Note that bei sha san should not be used with quatrefoil, they are opposite.