Thanks for the invitation. Reed root is very familiar, is the root of the reed, so it is also called reed root, rivers, lakes and even ponds will grow along the coast, hot thirsty chewing reed root can quench their thirst and sweet flavor, once upon a time the children will dig out and chew to eat or articulate in the mouth to quench their thirst. Reed root is not only edible, but also a common Chinese medicine to clear heat and fire, the main function is to clear the heat of the lungs and stomach.

Rehmannia glutinosa is sweet and cold, and is a medicine for clearing the lungs, nourishing the stomach and generating fluids, nourishing the lung yin and stomach yin, and is mainly used to treat the following conditions: 1) heatiness of the qi division, dryness of the mouth, thirst and heat, and astringent pain; 2) evil heat depressing the lungs, carbuncle spitting pus and blood, coughing and spitting yellow phlegm, and swelling and pain in the throat; 3) gastric heat upward of the heartburn, nausea, vomiting, retching, and it can also cure bleeding gums; 4) wind-heat depressing the lungs of the measles at its beginning, and it is not possible for the rash to come out. In addition, the "Materia Medica Meng Chuan" records that rehmannia can antidote wine poisoning, fish and crab poisoning.

Reed root is used for the initial injury of qi and yin, which is not easy to be attached to evil, and it is a commonly used medicine for the treatment of lung carbuncle, while fresh reed root is stronger in clearing heat and generating fluids, and fresh reed root is used in Reed Stem Soup for clearing the lungs and removing heat in the treatment of lung carbuncle. When used alone, 15-30 grams of dried rehmannia root can be decocted and taken internally, while fresh rehmannia root can be doubled in dosage, decocted in soup or mashed with juice.

Rehmannia glutinosa is cold in nature, people with cold spleen and stomach try not to take it, so as not to cause or aggravate diarrhea and abdominal pain and other symptoms.