How serious will it be to start with a ruler?

Depending on where the ruler was hit, the severity of the injury may be different. If you hit the brain, neck or spine, you may be paralyzed or even die.

Ruler, a plank used by teachers in private schools to punish students in the old days. Also called a ruler, it is made of two pieces of wood. The two trees incline upward and downward. The upturned person is seven inches and six minutes long, six minutes thick and one inch, and there are wisps of faces on the four sides below.