How to write slogans on billboards by the river?

What you pursue is colorful, and what I pursue is crystal clear.

Let's create a clean space for beautiful fish together.

May you be as clear as a pool of water.

Don't let anything that can't swim or dive into the water!

Don't forget to show your self-cultivation while enjoying the beautiful scenery.

Keep the beautiful scenery in your memory, and don't return it with garbage.