Houttuynia cordata Thunb , also known as "broken ear root", is a Chinese herbal medicine. I often eat it with stems or leaves in cold salad at home. It's very fragrant and delicious, and it has the effect of clearing away heat and toxic materials. If the mixture taken with water is higher than 20 degrees, there is no problem. But if the injection is below 20 degrees, it should be avoided as much as possible. This technology fails in production, and it is easy to cause heat source or allergic reaction. Hope to adopt.