In my opinion, there is no more important lesson than personal safety. Life is fragile, but when a person has enough knowledge to protect himself from danger, life will become stronger.
As middle school students, we should learn some safety knowledge. First of all, we should always obey the traffic rules. When we cross the road, we must wait for the green light. When we go to school or go home by bike, we should walk along the right and not ride at high speed. Secondly, in order to avoid the fire in our dormitory, we should not use any electrical appliances without permission. Third, we shouldn't climb the school wall in case we might hurt ourselves.
It's time for us to realize the importance of self-protection. Only with a good sense of self-protection can we live a safe and happy life.