Theoretically, it is right upstairs, but Beijing opera should be the costume of Ming Dynasty, including headdress, skirt and clogs. Only those who involve ethnic minorities in the western regions will change into other costumes, the most famous of which is Princess Iron Mirror. In fact, as long as they are not ethnic minorities, especially Dan Jiao, the clothes are all the same, but the colors and patterns have changed, and the landlord can find them after a careful look. After all, these plays are afraid to perform their own plays, for fear that they may have made any taboos. Therefore, although it originated in the Qing dynasty, by the Ming dynasty, the costumes were basically unified, and the roles of Han people were the same.