Punctuation: Feed pigs like mice.

The landlord's question reminds me of a joke in my hometown, which tells the story that a local rich man didn't know how to write couplets and was changed:

Original couplet:

Raising pigs is like a mountain, and all the mice are dead.

Brewing jar is good, acetic acid.

Because there are no punctuation marks in couplets, the rich man is still complacent. Who knows the second day early in the morning, I saw that the couplet was punctuated and then I was careless:

Modify link:

The pigs were so big that they all died.

Brewing barrels are suitable for vinegar and acid.