Literature in Qin and Han Dynasties from the Cultural Perspective

Why did eulogizing literary works flourish in autocratic times? Why was there no literary works in Qin while such pieces of paper as Censure Qin Dynasty in later times became masterpieces? Although there is no difference in nature between banning all schools of thought and burning books and burying Confucian scholars, why did prose-poetry boom in Han Dynasty? It is pointed out in this paper that it is necessary to read and study literary works extensively. However, the rise and fall of literary creation depend more on the global environment than on itself.