《明史·志·卷五十六》
在此之前，十六年，命令两浙偏僻之地，官商不能到达之处，山商每一百斤盐交纳银八分，给票发盐。
先是，十六年令两浙僻邑，官商不行之处，山商每百斤纳银八分，给票行盐。
Sixteen years before, an order was issued that in the remote areas of the Two Zhejiang regions, where government merchants could not reach, mountain merchants were required to pay eight cents of silver for every 100 catties of salt and were given a certificate to receive the salt.