Supplementary idioms solitaire: 1. Aboveboard-(exactly what you want)-Carrying a bag is guilty-

2, I will remember it for a lifetime.

3. The voice, expression and smile are all very strange.

Imitate:

Example: Compassion is a kind of spring breeze, which makes bare withered branches bloom new green.

Compassion is a drizzle that makes the dry land bloom.

In some schools, some warm and wonderful slogans are hung in front of the teaching building, such as "Respect teachers and treat students with appreciation". If you please draw up a slogan for the classroom to the effect that "no loud noise", you can write: Running water is heartless, please keep the building quiet.