The Structure of Cultural Regions and the Reconstruction of Beijing City's Axis

Beijing City's Axis,starting from the south to the north through the old city of Beijing,is a linear legacy,with a length of 7.8 kilometers and distributions of various sizes of nodes.During the time of the Ming and Qing Dynasties,Beijing City's Axis,which reflected the supreme imperial power of the core value,consisted of three parts including the south axis,the middle axis and the north axis.At that time,the spatial structure of Beijing City's Axis can be divided into sixteen units,forming four kinds of cultural regions including imperial power political region,security defense region,sacrificial rites region and commercial folk region.Nowadays,the spatial structure of Beijing City's Axis can be divided into fifteen units with four types of cultural regions including political and cultural square,museum and cultural palace,people's park and commercial leisure space,which fully reflects the complete change from serving the feudal emperors to serving the people.The continuous changes of spatial structure,symbol of the nodes,service function and cultural connotation contribute to the process of the constant reconstruction of the cultural regions of Beijing City's Axis.