《元史·本纪·卷七》
初七，把成都府的德阳县升格为德州，把虢州降格为虢略县。
戊辰，升成都府德阳县为德州，降虢州为虢略县。
On the 7th day of the Lunar Calendar, Deyang County of Chengdu was upgraded to Dezhao Prefecture, Guo Prefecture was downgraded to Guo Country.