Features: Tang poetry is rich in content and emotion.
Tang Dynasty: Praising the representative figure of great rivers and mountains: Li Bai
Middle Tang Dynasty: Poetry mainly reflects life: Bai Juyi.
Late Tang Dynasty: Full of feelings of worrying about the country and the people: Du Fu
Reason: (1) National unity and economic prosperity.
(2) The rulers pursue an enlightened and compatible cultural policy.
(3) Inherit and carry forward the traditional culture of past dynasties.
(4) Perfection of the imperial examination system.