Around that time, Tang-style official titles and department names representing the same official duties were already used as a kind of elegant name, and when FUJIWARA no Nakamaro, who idolized the Tang culture, took control of the government, the titles of all the officials were translated into Tang names in 758.
その前後からすでに、同様の職掌を有する唐風の職名および部署名を一種の雅称として用いることが行われていたが、唐風文化に心酔する藤原仲麻呂が政権を握ると、天平宝字2年（758年）百官名をすべて唐名で言い換えることが行われた。