Frugal root: Warm evil enters the camp, invaginates the pericardium, causes spots caused by warm poison, heat disease damages yin, red tongue, polydipsia, body fluid damage and constipation, bone steaming and fatigue, cough, red eyes, sore throat, scrofula Boil, diphtheria, carbuncle and sore. Ophiopogon japonicus: Nourishes yin and promotes fluid production, moistens the lungs and clears the heart. It is used for dry cough due to dryness of the lung, cough due to consumptive consumption, thirst for body fluids and wounds, upset and insomnia, internal heat quenching thirst, dryness of the intestines, constipation, and pharyngeal diphtheria. Platycodon: It is mainly used to treat cough with excessive phlegm, sore throat, lung abscess and pus vomiting, chest fullness and hypochondriac pain, dysentery and abdominal pain, and constipation of urine.