What is the longest poem in ancient times?

The longest poem in ancient times was Song of Eternal Sorrow. Song of Eternal Sorrow is a long narrative poem written by Bai Juyi, a writer in the Tang Dynasty, with a word of 84 1, which is considered to be the longest poem in ancient times. This poem depicts the love story between Emperor Xuanzong of the Tang Dynasty and Yang Guifei in the form of 120 sentences, which shows the author's praise for the prosperous Tang Dynasty and his nostalgia for Yang Guifei. Song of Eternal Sorrow has become a classic of ancient China literature with its beautiful language and rich emotional expression.