《宋史·本纪·卷二十一》
初五，焚烧苑东门所储藏的可以杀死人的毒药，并且严禁各地再进贡这样的毒药。
戊寅，焚苑东门所储毒药可以杀人者，仍禁勿得复贡。
July 5, the toxic drugs stored in the east gate of the Yuan were burned, and all localities were strictly prohibited from paying tribute to such drugs any longer.