Bianfu is a historical set of attire in Hanfu consisting of a knee-length Chinese upper garment known as jiangshapao (绛纱袍) over a qun, a Chinese skirt, known as hongchang or pair of ku-trousers along with other accessories. Coupled with the Chinese headwear known as pibian, the complete set of attire is also referred as pibianfu (皮弁服). This set of attire was considered to be a ceremonial dress. In the Zhou dynasty, the bianfu was only ranked-second after the mianfu and it was worn by the emperors when he would work on official business or when he would meet with the court officials.