1. Pigu powder: Pigu refers to a lifestyle that does not eat any solid food but only drinks water or other liquid food. Bigu powder is a nutritional supplement with high fiber and low calorie. It is usually made of a variety of natural plant materials, which has the functions of detoxification, beauty care and weight loss.

2. Black coffee: Black coffee refers to pure coffee without adding seasonings such as cream and sugar, and contains caffeine, polyphenols and other ingredients, which has the functions of refreshing the brain and promoting metabolism. Black coffee is usually filtered with filter paper and brewed with boiling water.

Generally speaking, there are great differences in composition and function between rice flour and black coffee. Bigu powder is mainly used for health care, detoxification and beauty, weight loss, etc., while black coffee is a common refreshing drink, suitable for people who need to keep their attention.