1, not the garbage thrown out of the window, but the character-don't let your character be scattered all over the floor.
2. The garbage bins in each building have been configured in place. Please put the garbage in the dustbin.
For the health of you and your family, please don't litter. When you want to throw things at high altitude, please pay attention: it may be your family who pass by downstairs.
4. Don't throw objects at high altitude, and be a civilized person.
5. Please place flowerpots, mops and other sundries on the balcony parapet to avoid accidents such as falling objects from high altitude;
I especially recommend it.