The reason is as follows: "People who forget history will repeat the same mistakes, and the cliff will not disappear if you close your eyes. From beginning to end, I believe that patriotism, like caring for your mother, is spontaneous, sincere and persistent, and is not affected by time, place and environment. No matter how many years have passed, we should not forget it. Look at the cruelty suffered by all Chinese sons and daughters during the Anti-Japanese War. How lucky we are compared with our present life. Every time I think of those pictures, we are filled with tears and heartache. It is not that we hold grudges and are narrow-minded, but that we should be worthy of those undead who risk their lives to resist Japan.