Li Bai's poem is about Lushan Xianglufeng Waterfall, commonly known as Lushan Waterfall, which is the most poetic waterfall in China.
The original poem is: Rizhao incense burner gives birth to purple smoke, overlooking the waterfall in front of Hangchuan. On the high cliff, it seems to be thousands of feet high, which makes people think that the Milky Way has fallen from heaven to earth.