In drawings of the Tang period, one can see that many guarding officers and kangan (eunuchs) wore these robes with ketteki (1. unstitched, open-sided traditional Japanese clothing, or clothing with such an open side; or 2. a robe worn by military officials with a round collar, unstitched open sides and no ran) and civil officers used hoeki no ho with ran, but it wasn't necessarily appropriate to suggest so.
唐代の絵画によると警衛のものや宦官などが闕腋のうわぎを用い、文官などが有襴の縫腋袍を用いる例が多いが、すべてが沿うとも言い切れない。