Korean poetry? haha` There really isn’t much to say about that, I’m afraid!
The use of free-verse poetry, metaphors, personifications and etc. are already commonly used within basic dialogue conversation in general.
You say a phrase like “Is it not true that the soil becomes hard after the rain has passed?” and people should understand you mean “You grow stronger after hardship” and whatnot.
If you look up meaningful song lyrics or stuff from the past, that is possibly the best way to find poetic wording.