Young students are bottles, and they are what they hold.

The brains of young students are also like bottles. If they are full of a lot of knowledge, they will become very valuable. If you indulge all day, you are worthless. From why children must study, the author is anonymous. The whole poem, a mineral water bottle, may be worth a dollar if there is nothing in it. If it is filled with mineral water, it may be worth five yuan. Milk costs only a dozen dollars. If it's wine, it's valuable. The brains of young students are also like bottles. If they are full of a lot of knowledge, they will become very valuable. If you indulge all day, you are worthless. So young students, like this mineral water bottle, read nutrition once every time they read a book. The world is fair, and every page you read will not be read in vain, but will be engraved in your bones.