The theory in Qi Shi is based on the conceptions of yin and yang
and the five elements with certain components worthy of
affirmation.Its four starts and five crises reflect the idea of the
unity and correspondence between man and universe as w-ell as the
progressive opinion of the development in Qi Shi.I-ts five natures
and six emotions are said to inform the art of commanding people
and serve as the foundation of believing in the original passion of
The Book of Songs which proves undou-btedly valuable in literary
criticism.
