The comprehension and transformation of Lin and Xue images by the writers in the Qing dynasty appeared in the continued books,dramas and folks of The Dream in Red Mansion.

Analysis on Baochai s character from the relationship between Baochai and Daiyu;

The aesthetic tendency of appreciating Daiyu and depreciating Baochai runs through the four stages in the first half of the 20th century and appears the distinct traits, which reflects brightly the epoch consciousness in every stage.

This paper tries to understand the background, development and evolution of the theory of "One-person of Xue and Lin", and sum up related literatures about this topic, of which theories of image and character of the two people are emphasized.