《明史·志·卷五》
三月乙亥日，火灾在坤宁宫发生，蔓延到干清官，都被全部烧毁。
三月乙亥，火发坤宁宫，延及乾清宫，俱烬。
On the Yihai Day of March, a fire broke out in the Kunning Palace and spread to the Ganqing Palace, and both of them were completely burned down.