《新唐书·本纪·卷八·穆宗 敬宗 文》
初二，成德军节度使牛元翼逃往京城。王廷凑攻破深州。
壬戌，成德军节度使牛元翼奔于京师，王廷凑陷深州。
On the second day of the first lunar month, Chengdejun's military governor Niu Yuanyi fled to the capital city. Wang Tingcou broke through Shenzhou.