Literary ranks and genres are the typical stylistic lay-out in Poetry Ranks (Shipin) and also a unique perspective of Zhong Rong′s history of poetry aesthetics.

Shi Pin s classification of poems based on tracing their sources as viewed from reality and tradition;

Cao Pi s Discussion on Literature and Lu Ji s Fu on Literature explained the concept of literary works,and promoted the career of compiling general collections which were represented by Separated Article Collections.

The Comparison of Literary Selection and Collection of Articles——The Second Research on the Editorial Work of Literary Selection;