Guozhen is a beverage made of sugar as the main raw material, added with so-called fruit juice and mixed with citric acid, pigment and essence. It is acidic and easily reacts with protein. Guozhen belongs to junk food in principle, which does more harm than good to the body. Drinking it with Nutrilite protein powder will greatly reduce the efficacy of protein. It could have reached 90% or 10%, and only one or two points were obtained in the end.