Guess idioms (one idiom per poem)

1. Read more than 10,000 volumes and write like a spirit. -Writing becomes a chapter.

2. The wine in Zhumen stinks and the bones on the road freeze to death. -It's not uncommon.

But as long as you climb a flight of stairs, you can broaden your horizons by 300 miles. -Forward-looking.

Who knows that every grain of Chinese food is hard. -Not enough to eat (food = Chinese food, bitterness = unwillingness).