《明史·志·卷五十五》
皇帝便命令主管官吏设法多蓄积粮食，仍仿照古代的常平法，春天赈济贫苦之民，秋天收成后返还官府，不收其利息。
帝乃令有司设法多积米谷，仍仿古常平法，春振贫民，秋成还官，不取其息。
The emperor then ordered the officials in charge to find ways to stockpile more grain, following the ancient Changping Law, which provided relief to the poor in spring and required them to repay the government in autumn without interest.