《新五代史·世家·吴世家第一》
四年正月，杨渥处理公务，陈墦等人在一旁侍立，徐温、张颢率牙兵闯进来，拉下陈墦等人，杀掉他们，杨渥不能阻止，因此不能控制政权而心中的气愤不能发泄，徐温等人心中也越发不放心。
四年正月，渥视事，璠等侍侧，温、颢拥牙兵入，拽璠等下，斩之，渥不能止，由是失政，而心愤未能发，温等益不自安。
In the first month of year four, Yang Ao was attending to his official duties, when Chen Yu and others were on standby, Xu Wen and Zhang Hao led the guards and barged in, pulled Chen Yu and others down, killed them, Yang Ao could not stop them, therefore he could not control the regime, and the anger in his heart could not be released, Xu Wen and others were increasingly more restless.