《礼记·杂记上》
某国诸侯去世，他国诸侯派来吊丧的使者就在主国大门以西就位，面朝东。使者的随员站在使者的东南，面朝北，以西边为上位。
吊者即位于门西，东面；其介在其东南，北面西上，西于门。
When a feudal lord from one country dies, the envoys sent from other feudal lords to express their condolences will take their positions to the west of the main gate of the host country, facing east. The envoys' entourage will stand southeast of the envoys, facing north, with the west side being the higher position.