What is China's earliest and original poem?

. Ge Tan is said to be a ballad in the era of the Yellow Emperor, recognized as a primitive social poem and the beginning of a two-character poem. The Book of Songs Youpian is the beginning of a three-character poem, that is, "Shake the heron, the heron flies, swallow the jujube and go home drunk". The Book of Changes is the beginning of the four-character poem Bao Sang. Oracle Bone Inscriptions "rain in the west, rain in the east, rain in the north, rain in the south". The Book of Songs is the earliest collection of poems!