《徐霞客游记·滇游日记二十三》
过一座桥，往西走三里，于是上坡，二里，越过坡往西逐渐下。
度一桥，西三里，乃蹑坡，二里，逾坡西稍下。
Crossed a bridge and went west for 3 miles, then started going uphill. 2 miles later, went gradually downhill after crossing the slope westwards.