Because fresh ginger has a lot of gingerol, which can promote blood circulation, but this substance will be evaporated due to high heat, so long boiled ginger soup can't promote blood circulation, and can't dissipate the cold and warm the body. Secondly, the longer the ginger water is boiled, the spicier it becomes. Ginger soup that is too spicy may make it impossible to swallow and may cause throat discomfort. This product is pungent and warm, attributed to the spleen and lung meridian, has the effect of sweating and relieving symptoms, warming and stopping vomiting, warming the lungs and stopping coughing, and can treat symptoms of external wind-cold, malignant cold and fever, headache, nasal congestion and other symptoms.