If a child has a yellow nasal discharge accompanied by a mild cough, coughing occasionally, excessive sweating during exercise or when sweating, with yellow and thick mucus, it may be due to wind-heat cold. It is recommended to give the child cooling drinks such as banlangen, xiasangju, and jinyinhua to help alleviate symptoms. Additionally, it is advisable to avoid exposing the child to environments that are too hot or too cold to prevent the onset of colds. If the symptoms persist or worsen, it is important to take the child to a doctor promptly.