Try stewed pears with rock sugar in northern Sichuan for a week. If it still doesn't work, try Huanglong Kechuan Capsule of Dongke Pharmaceutical Co., Ltd., which has a very good effect of relieving cough and resolving phlegm, and also has the function of repairing bronchus. It is also a pure Chinese medicine preparation with no side effects. Remember that you must pay attention to foods that are irritating to your diet during this time. Don't eat more warm water. Usually eat more vegetables that reduce fire, keep your neck warm, and soak your feet with hot water before going to bed. I hope this information can help you. I wish you a speedy recovery!