What do you mean, a scholar is poor and everything he eats is heavy?

As the old saying goes, a scholar is poor all his life, and his food will be heavy.

It means: a poor scholar is greedy for wine and would rather commit a felony than eat first.

There is a short story about a poor scholar who is greedy for wine. He was drunk because he was drunk and ran into a police officer.

"The chief will punish him," said the poor scholar. Let me finish my wine before punishing me.

So others laughed at him and said that a scholar's life was poor and he would eat heavily.