In fact, you should watch the "Yangshengtang" column of Beijing Satellite TV, in which one issue is about using ginger to prevent colds, but instead of washing feet with Jiang Shui as you said, you put ginger slices in your mouth. I just tried it a few days ago, and in the process of containing it, the ginger slices will naturally become smaller. It may be irritating at first, but it is believed that it is its strong irritation that effectively prevents the occurrence of colds.

Please accept it, thank you!