与西方不同,中国古代建筑的特点是庭宇深邃,院落重重。体现这一特点的重要建筑形制之一是门。门之功用先说帝王之门。它是构成王宫建制三朝(外朝、治朝、燕朝)五门分区规划的标界。五门自内向外依次为:路门、应门、皋门、雉门、库门。路门是前朝后寝内外分界的门,内为寝宫,外为 Different from the West, the ancient Chinese architecture is characterized by deep and profound courtyards. One of the major architectural forms that characterizes this is the door. The function of the door first said the king’s door. It constitutes the demarcation of the planning of the five divisions of the Three Kingdoms of the Royal Palace (Outer North Korea, Zhichao and Yanzhao). Five from the inside out are: Road, should door, Gao door, pheasant door, library door. Road door is before and after the fall of the inner and outer boundaries of the door, within the palace, outside