-The identity system depends on tangible architecture, landscape roads and so on, but it doesn't equal to the supplement of its subject but an indispensable constituent part. As the finishing touch of the whole urban space, by means of design of elements such as symbols, graphs, characters and colors as well as integration of various factors, the identity system reflects the urban specialty, conveys urban features related to history, geography, culture and emotion. The identity system provides suitable space environment to people through application of concrete symbols, graphs, characters and colors, in addition, it also mirrors that the designing culture of a city equals to its design concept with the combination of the historical culture of this city. A modern city shall be provided with such function, that is, it shall possess a whole set of well-designed and scientific-planned indication mechanism to help those wandering pedestrians to indicate direction and find their way successfully. It shall not only serve the mass, realize inter-coordination among people, identity facility and space environment to make people's living environment more comfortable and convenient, but also it constitutes the vital carrier to spread local culture and model urban brand.
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