《徐霞客游记·滇游日记四十三》
澜沧江从顺宁西北境穿过它的腹地往东流，到苦思路之东，又穿过它的腹地往南流到三台山之南，这才向南流出去成为它的东部边界，既经公郎与蒙化府分界，又向南流过云州东边，又经顺江与景东府分界。
澜沧江从顺宁西北境穿其腹而东，至苦思路之东，又穿其腹而南，至三台山之南，乃南出为其东界，既与公郎分蒙化，又南过云州东，又与顺江分景东。
Lancang River flows eastwards through the hinterland from the northwest border of Shunqing, and after it reaches the east of Kusilu, it flows eastwards through the hinterland and southwards to the south of Santaishan, and then it flows southwards and becomes its eastern border which is divided from Gonglang and Menghua prefecture, and flows southwards through the east of Yunzhou, and is divided from Shunjiang and Jingdong prefecture.