《三国志·魏书·钟繇华歆王朗传》
周朝的官职已经完备，五天上朝一次，大臣官员们一同觐见，而司士区别他们的位置。
周官则备矣，五日视朝，公卿大夫并进，而司士辨其位焉。
 The official positions in the Zhou Dynasty were complete. Once every five days, the ministers and officials had an audience together, and the Sishi distinguished their positions.