May be an exaggerated metaphor, or specifically referring to certain parameters of comparison, a bowl of rice can be more or less, according to the habits of the southern region, ten small bowls are possible, according to the north, may also be two or three bowls.

From a warm perspective, 100 grams of rice is about 120 calories. A bag of potato chips 100 grams, about 500 calories. It can be seen that the calorie value of potato chips is still very high.

But other nutrients may not be so, a bag of potato chips may not be full, one or two bowls of rice can be full. It can only be said that certain aspects have some scientific basis.