On Valentine's Day, a friend had a question-how can a heartless person be heartless on Valentine's Day? Please make a bottom line.

The difficulty of this couplet is that the former heartless person has no lover, and the latter heartless person is heartless. Three words can have two meanings because they read different sentences.

Love is an adjective and man is a noun. Valentine's Day is a noun, used as an adjective (similar to the form of nouns in English), a holiday is a noun, and Valentine's Day is a proper noun; The first heartless person, love is a noun, nothing is an adjective; The second heartless person, heartless is an adjective, and person is a modifier.

There are no "lovers" on Valentine's Day, but they are all "heartless" people.

There are "stories" in the "story meeting", but none of them are "things for a reason"