《新唐书·列传·卷八十三》
建封去世后，节度府的属官郑通诚代理节度府留后，害怕他的军队发生兵乱，趁浙西的守卫部队经过徐州，打算请求留下作为自己的援军。
建封卒，府佐郑通诚者摄留事，畏其军乱，因浙西戍兵过徐，谋引以为援。
After Jianfeng died, Zheng Tongcheng, a subordinate official of the Jiedushi House, acted as the acting Jiedushi, fearing that his army would become a riot, and took advantage of the fact that the guards in Western Zhejiang were passing through Xuzhou, intending to request to stay as their reinforcements.