Comment on Liu Yizheng's research on Han Dynasty

Liu Yizheng,by using cultural history,historical criticism and historicity,stressed on the historical standing of Han dynasty,the Shangshu system of Han dynasty,the discussion and decision making process in Han dynasty,the policy of treating parents with filial piety and being honest in performing the official duties in Han dynasty,the taxes system of Han dynasty,and the system of Han dynasty are:researching Han dynasty base on China's realities;displaying the brilliant achievements in Han dynasty;clearing and defining the historical responsibilities.