From Li Bai's 《
望庐山瀑布》 (Li Bai, Tang, c. 725):
日照香炉生紫烟,遥看瀑布挂前川。飞流直下三千尺,疑是银河落九天 (Sunlight on Incense Burner Peak brings purple smoke; from afar I see the waterfall hanging before the river. A flying stream drops straight three thousand feet - one suspects it's the Silver River [Milky Way] falling from the ninth heaven). One of the most famous waterfall poems in world literature.