《明史·列传·卷七十三》
有奸商投依外戚张鹤龄，请求将长芦旧引票十七万免予追纳盐课，每张引票纳银两五分，再另外如数用钱购买各盐场的余盐，听其贩卖，孝宗同意。
奸商投外戚张鹤龄，乞以长芦旧引十七万免追盐课，每引纳银五分，别用价买各场余盐如其数，听鬻贩，帝许之。
A corrupt businessman sought refuge with Zhang Heling and requested to exempt over 170,000 Changlu old salt permits from taxation, with two-fifths silver paid for each permit, and then buy the excess salt from the salt fields in the same amount to sell. Emperor Xiaozong agreed.