Yuefu poetry, also known as Han Yuefu. Yuefu is a special official institution established since the Qin Dynasty, which is responsible for distributing music, training musicians and collecting folk songs. Han Yuefu refers to the poems collected by Yuefu organs in Han Dynasty. These poems were first circulated among the Han people and preserved through Yuefu, which was called "Song Poetry" by the Han people and "Yuefu" or "Han Yuefu" only in the Wei and Jin Dynasties.