Dàchén men chuānzhe cháofú shàng cháo jìnjiàn huángdì.
The ministers wore court dress to attend audience with the emperor.
Tips
usage
朝 here is cháo 'imperial court', not zhāo 'morning'. Court dress was the most formal grade of official attire, worn for major audiences and state rituals; everyday working dress was 常服 (changfu), and 官服 (guanfu) is a more general cover term.