Sideline, as the starting point of shapes, is very valuable to paintings, and especially the intercourse of painting skill, style, observation method and shape in representationalism painting.

• 边缘线(或轮廓线)作为一切造型的出发点对于绘画具有重要的价值,而具象绘画的边缘线更是画家技法、风格、观察方法和形体处理的一个交汇点。