As the old saying goes, "everything is established in advance, and it is abolished if it is not planned." Perhaps, we will never use this knowledge of escape, but if we encounter it in the future, it will play a key role and save precious lives. In that tragic earthquake, the students in Sangzao Middle School didn't panic. Under the command of the teachers, all the students evacuated quickly according to the scheduled evacuation plan. In this earthquake, they all moved to safety, and no one was killed or injured. Because they organize similar exercises every six months, because they have the ability to save themselves at critical moments. Imagine what a disaster it would be if they didn't know this knowledge and didn't train! I can't help thinking of our neighbor, Japan, a country with frequent earthquakes. Frequent earthquakes have accumulated enough experience for the Japanese. They conveyed safety awareness to all citizens through TV media to minimize the losses caused by the earthquake. These disasters always remind everyone of us, not only earthquakes and fires, but also tsunamis and thunderstorms. When disaster comes, how to try to escape calmly and rationally is what everyone should do. Even a small whistle will help us in times of crisis and bring us hope of survival. After all, there is only one life, so cherish it.