Below the cliffs is the rolling weir.

The idiomatic expression "The distinction is clear" refers to the difference between the Jing and Wei waters, which are clear and turbid, flowing together but not mixed.

But underneath this cliff is pure weir, a torrent of yellow water that does not see its way down.

An insignificant wave splashed up after Gongsun Xi jumped, and it was some time before what appeared to be his head was seen to rise to the surface at quite a distance from ...