《徐霞客游记·滇游日记四十一》
往北上走一里多，又转向东，绕过北面的山坳往东上坡，屡次上走不停，又是七里后来到中火铺。
北上里余，又转而东，盘北坳而东上坡，屡上不止，又七里而至中火铺。
Going north for more than a mile, then turn east, and go around the mountain pass to the east and go up the slope, going up several times continuously, and then seven miles later arrived at the Zhong Huo shop. 