The writing of the author and the reading of the Figurists and the Autobiography School about 'A Dream in Red Mansions' both feature the ＂literature text＂ (fictional works, special means of expression, the value and distance of aesthetics and the content without confusion with the daily life) and the ＂cultural text＂ (providing mediation, guarantee the self-identification by the text and shelter the souls to acquire the facts that can not be hidden) in contemporary western novels. The Figurists regard 'A Dream in Red Mansions' as a cultural text, by restoring the facts of the history in it to provide the self-identity of the readers. Its achievements originated from the theory of family affairs in Qing dynasty and maximized to a national self-identity theory in modern times, mourning the former dynasty and ridiculing the Qing dynasty, as well as ejecting the Manchu and reviving the Han nationality. The Autobiography School clarified the process of objective criticism in literature text, and gained the dominant position in literature criticism. However, followed the way of unscrambling it as the self-identity by Cao xueqin because they did not give up the reappearing of self-identification historical event in cultural text. Consequently, in the studying of the Figurist and Autobiography Redology, it is improper to stand only in the angle of literature text but forget the analysis of cultural text, or only to criticize the strained interpretation of the way of literature criticism, but turn a blind eye to the construction of the culture identity. So the paper chose the Taiwan Figurtist Redology since 1949 to study the gradual evolution in the historical imagination and national identity during the process of historical evens from the Shunzhi to Koxinga.