《资治通鉴·唐纪·唐纪五》
被王世充所杀的独孤机的儿子定州刺史独孤修德带着兄弟们到王世充停留的地方，假称有敕令传唤郑王，王世充和兄长王世恽跑出门，被独孤修德等人杀死。
独孤机之子定州刺史修德帅兄弟至其所，矫称敕呼郑王；世充与兄世恽趋出，修德等杀之。
Duguxiu, the governor of Dingzhou and the son of Dugujing who was killed by Wang Shichong, took his brothers to Wang Shichong's residence and falsely claimed that there was an edict summoning King Zheng. Wang Shichong and his elder brother Wang Shiyun ran out of the door and were killed by Duguxiu and others.