《徐霞客游记·粤西游日记三十八》
它的源头一是出自于东面都明岭的石穴中，一是自南面的下河岭往北流来，两条水流会合成山涧。
其源则一东自都明岭之石穴，一南自下河岭北来，二流合而成涧者也。
One of its sources originates in a stone cave on the Dongming Ridge to the east, another flows north from the Xiahe Ridge to the south, and two streams meet in a small mountain gorge.