定义
壁画临摹技法术语之一，为敦煌壁画临本专用术语。用来表现壁画现状的临摹方法，即以石色、矿植物颜料等，将壁画的变色脱落等现状如实临摹复制于宣纸或泥板上，忠实反映壁画现状。
Objective Copying: a specific manner of reproducing Dunhuang murals exactly according to their present condition. In this technique, mineral and plant pigments are employed to copy the mural on a piece of xuan paper or a plaster panel without any alteration to the faded or damaged spots, so as to resemble the original as possible.