《周礼·夏官司马·候人&司右》
射人掌管王国的三公、孤、卿、大夫的朝位：三公面朝北而立，孤面朝东而立，卿、大夫面朝西而立。
射人掌国之三公、孤、卿、大夫之位，三公北面，孤东面，聊大夫西面。
The Shenren was in charge of the court positions of the San Gong (Three Dukes), Gu, Qing, and Daifu (Lower-level Aristocrats) of the Kingdom: the San Gong faced north, the Gu faced east, and the Qing and Daifu faced west.