It is obvious to most of us, for example,that the course of every dynasty always behaves in a familiar way. To be moreconcrete, there is an enlightened period at the beginningof a new dynasty, such as the Han, Song and Yuan dynasties. With the developmentof society, it reaches the climax gradually and people lead a stable andabundant life. At the same time, science and technology flourishes. In fact, it is repeatedly pointed out that science andtechnology has progressed to a great extent with the abundance of society. Asis often the case, however, people always have a terrible and pathetic time at the end of dynasty. Furthermore, theyhave no choice but to fight for their rights. It goes without doubt that theold dynasty breaks down and a brand new one is established finally.

In brief, it can be said with muchcertainty and confidence that history does repeat itself. What matters is thatwe would learn from the repeat of history. As we all know, history is a mirror,which could give some hints for our present and future.