Sanbai decoction seems to be aimed at spleen and stomach deficiency and cold, so it should not be cool. This was mentioned in an article in Wu Guozhong's blog. You can look for it. I have tried this soup, and its whitening effect is remarkable. I just cook it for seven days a month and drink it continuously. I originally planned to cook it for a week every month, but I got lazy later. Every time you boil it into a big pot of music buttons, it's about 700ML, so just drink it as tea. After drinking for 7 days, my hands and feet were obviously white, but I recovered after one month. If you want to be white, it is estimated that it is no problem to continue drinking every month.