《汉书·传·董仲舒传》
可是到了周朝，在宫门外筑了两座观望的台，乘坐用玉装饰的车，制造红色的盾和玉石做的斧柄，朝廷裹排列着六十四人的舞蹈，到处响起歌颂的声音。
及至周室，设两观，乘大路，朱干玉戚，八佾陈于庭，而颂声兴。
However, during the Zhou Dynasty, two gazing platforms were built outside the palace gate, a car decorated with jade was used, a red shield and a jade axe handle were made, and a dance of 64 people was arranged in the court, and the sound of hymns could be heard everywhere.