The Chu Ci, variously translated as Verses of Chu or Songs of Chu, is an anthology of Chinese poetry traditionally attributed mainly to Qu Yuan and Song Yu from the Warring States period (ended 221 BC), though about half of the poems seem to have been composed several centuries later, during the Han dynasty. The traditional version of the Chu Ci contains 17 major sections, anthologized with its current contents by Wang Yi, a 2nd-century AD librarian who served under Emperor Shun of Han. The early (pre-Qin dynasty) Classical Chinese poetry is mainly known through the two anthologies, the Chu Ci and the Shi Jing (Classic of Poetry or Book of Songs).