《徐霞客游记·粤西游日记八》
横山、碧崖两座高峻的山崖，夹立在江流左右，它们的山势相等，都不如削崖那样高大。
横山、碧崖二岩夹江右左立，其势相等，俱不若削崖之崇扩也。
The Hengshan and Bixi, two tall, steep cliffs, stand in parallel rows on the left and right banks of the river. Their heights are about the same, but they are not as tall as the precipitous cliff.