Planar formation is to use the basic elements of dot, line and plane to satisfy the needs of design drawing according to the principle of formal art.
平面构成是按照形式美的法则，运用点、线、面的基本元素来处理设计所需要的图形。
2
Basic concepts of tourism phenomenon deals with "what is tourism", where tourism formation, pattern and quality appear. Tourism is a spot line operating "sealed hoop".