Seven-day slimming soup, which became popular seven or eight years ago, is also called "witch soup" because it is considered to be "amazing" and all ingredients must be put into it when cooking. At that time, it was said that Chen Meifeng, the "most beautiful Obasan", relied on it to keep fit, while Faye Wong's bamboo figure, besides cassia seed tea's slimming, was said to have helped a lot.