From a distance, the water flowing from the mountain wall or the sudden drop of the river bed looks like a piece of white cloth hanging.
In the Northern Wei Dynasty, Li Daoyuan wrote "Notes on Water Classics and Luoshui": "The waterfall flies over the beam, the river hangs to fill the gully, and it is ten feet turbulent." Song Sushi's poem "Listening to the Adults Playing the Piano on the Ship": "Song Feng Waterfall has been cleared, and I love the voice of Yu Pei more." "Water Margin" first: "Waterfalls fly obliquely, vines hang upside down." Wei Wei's Oriental, Chapter 11, Part IV: "Huo Ran, a shell landed nearby, and the water column stirred up swept down like a waterfall and poured into people's necks."
Waterfalls are called falling water in geology, that is, rivers fall vertically from the sky when they flow through faults, depressions and other areas. During the river period, waterfalls are a temporary feature and will eventually disappear. The rate of erosion depends on the height and discharge of a particular waterfall, the type and structure of related rocks and other factors.