《徐霞客游记·滇游日记二十五》
向东走一里多，有座小土山盘踞在峡口为北边，叫做练城，上面建有佛塔，是县里学校的案山。
东里余，有小阜踞峡口之北，曰练城，置浮屠即佛塔于上，为县学之案。
After walking more than a mile to the east, there is a small earthen hill in the north at the mouth of the canyon, called Liancheng, with a Buddhist pagoda on it, which is the case mountain of the county school.