Adapting to nine days is the ancient poem.

Look at Lushan Waterfall

Li Bai in the Tang Dynasty gave birth to purple smoke from the Rizhao incense burner, looking at the waterfalls hanging from thousands of rivers. 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.

The censer peak gives birth to a purple mist under the sunlight, and a waterfall hangs in front of the mountain like white satin from a distance. There seems to be thousands of feet of waterfalls on the high cliff, as if the Milky Way had fallen from the cliff for nine days.