《晋书·志·第十四章》
释奠讲经的时候就主持有关事宜，出行时就充当前驱，引导仪仗。
释奠讲经则掌其事，出则直者前驱，导威仪。
When the释奠lecture took place, they would officiate related affairs, and when going out, they would act as vanguards and lead the ceremonies.