From Li Bai's (
李白) Tang-dynasty poem
《望庐山瀑布》 (Gazing at Mount Lu’s Waterfall). Full quatrain: 『
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』 - 'sun lights Incense Burner Peak, purple mist rising; from afar the waterfall hangs like a river in the sky. A flying stream plunges three thousand feet - surely the Milky Way has fallen from the ninth heaven.' A staple of primary-school textbooks.