A poem warning yourself not to be stupid in the future.

Tell yourself not to be stupid in the future:

1, black hair doesn't know how to study hard early, but it's too late to learn.

2, reading thousands of books, writing like a god.

3. Ask where the canal is so clear, because there is running water from the source.

4. If young people don't work hard, old people will be sad.

5, the blade is sharpened, and the plum blossoms are bitter and cold.