《徐霞客游记·滇游日记七》
从这里就登上南面的山冈，在冈岭上平走二里，这是寻甸府和云南府的分水岭。
从此遂上南冈，平行冈岭二里，是为寻甸、云南之界。
From there I climbed the hills on the southern side and walked for two li along the ridge of the hill. This was the watershed between Xun County Prefecture and Yunnan Prefecture.