The required materials are 20 grams of mung bean, 20 grams of red bean, 20 grams of lily, and appropriate amount of sugar. Soak mung beans, red beans and lilies in clear water for half an hour; Secondly, wash it, put it in a pot, add a proper amount of water, boil it over high fire, and then cook it over low fire until the mung beans and red beans are cooked and rotten; Then add the right amount of sugar to taste. It can whiten, moisturize and detoxify.