A slogan prohibiting graffiti on the desktop.

1。 Please don't be stingy with your little strength.

2。 Pick up the garbage on the ground, and the earth is quiet.

3。 Please don't pollute the clothes on the earth.

4。 Don't throw your face on the ground.

5。 What you throw away is not rubbish, but quality and morality.

6. Pick up the rubbish on the ground and the earth will be quiet.

Please take me home.