At all times, many celebrities and people with lofty ideals regard diligence as the motto of success. "Diligence can make up for mistakes; "Stupid birds fly like a forest early;" "Dripping water wears away the stone, a rope saws off the wood" and so on are all famous maxims to encourage people to be diligent. Lu Xun, a famous writer in China, said, "Time is like water in a sponge. As long as you are squeezed, there will always be. I just spend other people's coffee time on my study. " Einstein, a great scientist, said, "Success is equal to one percent inspiration and ninety-nine percent diligence." The world today is in a period of high civilization. Without the diligence of predecessors, there would not be so many inventions in human history, and human beings would stay in the era of eating and drinking blood forever. As we all know, in the world's top stadiums, every champion is hard-won, which is the result of athletes' efforts. They practice three or nine times in winter and three days in summer, and they suffer great pain at the same time. Without strong will, fighting spirit and hard work, how can they climb the highest podium in the world? The same is true of our study and work. Only by working hard can we have a fruitful harvest.