综观中国历史上统一的封建王朝，除秦、隋历时甚短外，汉、唐、宋、明、清各朝均有二、三百年的历史，这些王朝到了中后期，权力分配、典章制度乃至思维习惯都已定型，欲打破常规。进行革新，不触动既得利益集团的根本利益是绝对不可能的。改革，只有冲破重重阻力，方能取得成 Looking at the unified feudal dynasties in Chinese history, except the Qin Dynasty and the Sui Dynasty, the history of Han, Tang, Song, Ming and Qing dynasties had two or three hundred years of history. These dynasties came to the middle and later periods and the power distribution and the system of dictation And even the habit of thinking have been stereotyped, want to break the routine. It is absolutely impossible not to touch on the fundamental interests of the vested interest groups for carrying out reforms. Reform can only be achieved if we break through all obstacles