Reason: Tofu is not high in calories, but there is nothing to lose weight.

Note: This way of eating is not scientific. Tofu is rich in protein, calcium and other nutrients. Onion contains a lot of oxalic acid. When tofu is mixed with onion, the calcium in tofu combines with oxalic acid in onion to form white precipitate calcium oxalate, which destroys the calcium in tofu. Calcium oxalate is an object that is difficult for human body to absorb. If long-term consumption of shallots mixed with tofu will cause calcium deficiency in human body, which will lead to cramps and chondrosis.