I read a book of Chinese medicine, and there is a prescription that uses old crown grass, which I have never heard of. Is Laoguancao a traditional Chinese medicine or a herbal medicine, and what role

I read a book of Chinese medicine, and there is a prescription that uses old crown grass, which I have never heard of. Is Laoguancao a traditional Chinese medicine or a herbal medicine, and what role does it have? The landlord said geranium, also known as Laoguan grass. It belongs to Chinese herbal medicine, 1. Southern Yunnan herbs: get rid of itchy skin. It can be used for the treatment of pain in bones and muscles, flaccidity due to phlegm-fire, paralysis of hands and feet, numbness, dysuria, heat accumulation in bladder, sore and toxic swelling, consumptive fever, wind-fire, worm teeth, acne and furuncle. 2. "Outline": expelling wind, dredging collaterals and promoting blood circulation, strengthening bones and muscles and dredging collaterals. Treat injuries, joint pain, numbness, skin wind, and often drink wine. 3. "Modern Practical Chinese Medicine": stop dysentery for a long time, thicken the stomach, adjust the middle and strengthen the spleen. 4. Guizhou folk prescription set: treating traumatic injury, stopping bleeding from knife injury, relieving cough and benefiting lung qi. 5. Pharmacology: clearing away heat and toxic materials. Treat fever, thirst, carbuncle, swelling and pain.