《礼记·杂记上》
于是使者入门，站在门内右侧，其随员也都跟着，立在他的左边，以东边为上位。
临者入门右，介者皆从之，立于其左东上。
The envoys then entered the temple and all stood on the right side of the entrance door, except for the attendants, who took their place on the left, the east side being the place of honor.