"When he was alive, people called him Du Er, Du Shiyi, and Du Gongbu; three hundred years after his death, people called him a poet. But above all titles, he was just a person who wrote poetry in autumn."
To sum it up in one sentence: a poet spent his life witnessing the fall of the Tang Dynasty from its prosperity to the abyss, and used poetry to write a biography for the people and record the times.
