Rewrite ancient poems into idioms

Who knows that every Chinese food is hard (hard-won)

But when you walk up a flight of stairs, you can broaden your horizons by 300 miles.

3. Read thousands of books and write like a god (learning memory)

4. There is no way to recover from the heavy mountains and heavy waters, and there is another village.

Silkworms will weave until they die in spring, and candles will drain the wick every night (try your best until you die).