It tells us that life is like a marathon, and the key to victory is not the sudden outbreak, but the persistence on the way. Many times, success means sticking to it for one more minute. If you don't give up for one minute, there will be hope for the next. We just don't know when this minute will appear. As long as you keep walking, your scenery will eventually appear.
Generally speaking, ringing the bell three times represents happiness, auspiciousness and longevity respectively. There is another saying, that is, hitting three times means respecting Buddha, dharma and monk.