What styles does Zhong Rong emphasize in his poetry creation?

Zhong Rong emphasized that poetry creation must be "air-dried, Cai Danrun", and only paying equal attention to "wind" and "Cai Dan" is the best work. He regards Cao Zhi as the most outstanding model of "Jian 'an Style", and thinks that Cao Zhi's poems are "with high backbone, flowers and luxuriant words, elegant feelings and resentment, and elegant style".