自西方文艺复兴时代确立的学院派素描写实体系是一个大系统,如果我们把学院派素描写实体系中的古典素描看成是恒星的话,那么,与之对应的印象派素描、光影素描、块面素描、结构素描、超写实素描就是行星,介于这些素描之间的块面调子素描、块面结构素描等等那就是围绕核心运转的卫星了。我们之所以要建立这样一个星系座标, The academic sketch realistic system established in the Western Renaissance is a big system. If we consider the classical sketch in the academy realistic drawing system as a star, then corresponding impressionist sketches, photographic sketches and block sketches , Structural sketches, ephemeral sketches are planets, sketches of intervening sketches between these sketches, sketching of block sketches, and so forth are the satellites that revolve around the core. The reason why we want to establish such a galaxy coordinates,