Abstract: Influenced by the tendency of aestheticism during Wei, Jin and Southern and Northern Dynasties, essays characterized by reasoning tended to be more artistic. Using allusions properly become important embodiment of the argumentation's form beauty. It's logical characteristics lied in the coexistence of Interpretation of the concept, Expressing opinions and Constitute the argument. It reflects he beauty of nature, implicit elegant and Rich connotation. To explore the prototype meaning is the important way of using allusions.