In ancient Han Dynasty, unhappy people were called poems and happy people were called songs. In modern times, they are generally called poems. It expresses social life and people's spiritual world according to certain syllables and rhythms. The origin of poetry can be traced back to ancient times. The Book of Songs is China's first collection of poems, which is said to have been compiled by Confucius. There is still debate on this issue in academic circles. Poetry is the oldest and most literary style, which comes from ancient labor songs (later developed into folk songs) and sacrificial eulogy. Poetry used to be a general term for poetry and songs, and poetry combined with music and dance was called poetry. China's poems have a long history and rich heritage, such as The Book of Songs, Songs of the South, Han Yuefu, and the works of countless poets. European poetry originated from Homer and Sappho in ancient Greece, Virgil and Horace in ancient Rome.