Boiling water with scallion can regulate body temperature, make sweat glands sweat normally, treat early cold and dispel cold, and prevent colds.

Onion has seven medicinal effects, which are irreplaceable by high-priced Chinese medicine. As the saying goes, "an onion takes ten minutes." Onion is a common ingredient in daily life, and it is also a traditional Chinese medicine with many functions of getting rid of diseases and keeping healthy.

Onions can be eaten cold or used as seasoning. For men, eating green onions or leeks three times a week can achieve the effect of strengthening yang and nourishing yin.