《资治通鉴·唐纪·唐纪十一》
请求自今日起，后宫及东官的女宫有空缺，都应选择有才行的良家女子充任，以礼聘纳；那些没入官府以及出身微贱的人，都不能再补充录用。 
请自今后宫及东宫内职有阙，皆选良家有才行者充，以礼聘纳；其没官口及素微贱之人，皆不得补用。 
From today onwards, all of the openings in the Women's Palace of the Imperial Palace and those in the Women's Palace of the Dongguan will need to be filled by dignified women of talent; these women cannot be drafted from the official register nor should they be women born into the lower classes. 