建筑物正面的门叫正门。《红楼梦·林黛玉进贾府》:“正门之上有一匾”。建筑物靠近角上的小门叫角门。《林黛玉进贾府》:“却不见进正门,只进了两边角门。”官署大门之内的门叫仪门。《明会典·官员礼》:“新官到任之日……引至本衙门仪门前下马。”古代帝王巡狩、田猎,野宿在险阻的地方,用车舆作为屏藩,出入之处,仰起两辆车子,使两车之辕相向交接,成一半圆形的门叫辕门。《周礼·天官·掌舍》:“设车宫辕门。”后把官署的外门叫辕门。《史记·项羽 The front door of the building is called the main entrance. “Dream of the Red Chamber Lin Ruyu into Jia House”: “There is a pimple above the main entrance.” The small door near the corner of the building is called the corner door. “Lin Daiyu into the Jia Fu”: “but did not see the main entrance, only into the two sides of the door.” The door inside the government office door called the instrument door. “Ming Huidian Official Ceremony”: “The day the new official arrives ... ... leads to the front of the gate.” The ancient emperor patrols, field hunting, and wild places in the dangerous place, using the rut as a screen, the entrance and exit Raise the two cars and turn the two cars to each other. The semi-circular door is called the door. “Zhou Li Tian Guan Lao She”: “Set up a car palace door.” After the official door of the government called the door. "Historical Records Xiang Yu