Tang poetry
Jian'an poetry refers to those poetic movements occurring during the final years of the failing Han Dynasty and continuing their development into the beginning of the Six Dynasties period. Jian'an is considered as a separate period because this is one case where the poetic developments fail to correspond with the neat categories aligned to chronology by dynasty. Typical poets of this period are Cao Cao, Cao Pi, Cao Zhi, and Xu Gan. One of the more important poetic developments of this period is toward the odd number, fixed length verse styles also typical of the Tang poetry period. As a result, some of the poetic forms often associated with Tang poetry can be traced back developmentally to some of the forms developed during the Jian'an period.