Using white onion boiled in water can treat colds. White onion water is pungent, warm and enters the lung, stomach and liver meridians. It is pungent, spicy, and cathartic, and has the effects of publishing and dispersing cold, promoting the circulation of Yang, detoxifying and killing insects. It is used for treating cold and flu, headache and fever, body pain and palsy, abdominal pain of yin and cold, obstruction of the bowels, laryngeal paralysis, dysentery, dysentery, canker sore, sore boils and swelling pain, abdominal pain of insect accumulation, bruises, fish poisoning and insect and snake bites. Boiled water with white onion disperses wind and cold and has a sweating effect, but the sweating effect is weak and is mainly used for mild colds and flu or as an adjunct to other drugs to help with sweating. It is often used clinically in combination with tempeh and ginger.