《资治通鉴·唐纪·唐纪二十三》
武则天一病不起，一直住在长生院，只有张易之和张昌宗二人在身旁侍奉，宰相们无法与她相见已经几个月。
太后寝疾，居长生院，宰相不得见者累月，惟张易之、昌宗侍侧。
Wu Zetian has been sick in bed, living in Changsheng Hospital, and only Zhang Yizhi and Zhang Changzong serve by her side. The prime ministers had not met her for several months.