The Book of Songs is the earliest collection of poems in China. It is the first collection of poems in the literary history of the Han Dynasty in China, which collected the history from the early Western Zhou Dynasty to the middle of the Spring and Autumn Period, that is, from1/kloc-0 to 600 years ago, about 2,500 years ago.
Chu Ci is a collection of poems written by Liu Xiang on the basis of predecessors in the Western Han Dynasty. It was written between 26 BC and 6 BC. So it has a history of more than 2000 years.