《后汉书·列传·宣张二王杜郭吴承郑赵》
光武特诏御史中丞与司隶校尉、尚书令会同并专席而坐，所以京师称为 三独坐 。
光武特诏御史中丞与司隶校尉、尚书令会同并专席而坐，所以京师称为 三独坐 。
Guangwu specially ordered that the Imperial Censor-in-Chief sit together at the same table with the Colonel Who Inspects the Jails and the Minister in Charge of Documents, so the citizens of the capital called them the "three sitting alone"