Fengye Kechuanping Oral Liquid(children's type)

(1) To preliminarily evaluate the effect of Fengye Kechuanping oral liquid (children's type) in treating acute bronchitis (wind-heat cough syndrome) in relieving bronchitis symptoms/symptoms and signs, shortening the course of the disease, and improving TCM syndromes in children. Observation indicators: Bronchitis severity score (BSS) and its symptom and sign factor score, cough symptom score, clinical efficacy summary-degree of improvement, cough onset time/rate, cough disappearance time/rate, TCM syndrome efficacy. (2) To observe the safety of Fengye Kechuanping oral liquid (children's type) in clinical application. Observation indicators: incidence of adverse events/adverse reactions, vital signs, laboratory tests, etc.