Zheng-tong: Year 4, Month 6, Day 7
17 Jul 1439
The regulations for the selling of salt for grain in Yun-nan were revised. Previously, due to the expedition against Lu-chuan, merchants were called to Da-li and Jin-chi to supply grain in exchange for salt. At this time, the troops had long been there and grain was expensive, so the merchants were not coming or else had to sell at a loss. Thus, at this time, the prices of salt were reduced as follows: In Da-li Prefecture, for two dou of rice and in the Jin-chi Command for one dou five sheng of rice received, one yin of salt from the two salt supervisorates at Bai-yan and Wu-jing would be paid. In Da-li Prefecture, for two dou five sheng of rice, and in the Jin-chi Command for two dou of rice received, one yin of salt from the two salt supervisorates at Bai-yan and An-ning would be paid. These payments were not to be subject to the usual payment sequence. *For other untranslated references on grain/salt exchange in Da-li and Jin-chi, see Ying-zong Shi-lu juan 67.9b-10a and juan 76.14b.
Zhong-yang Yan-jiu yuan Ming Shi-lu, volume 24, page 1068