郑昶在其著作《中国美术史)中写道:“……然而民族精神不加抉发,外来文化实也无补。因为民族精神是民族艺术的血脉,外来文化是民族艺术的滋补。徒恃滋补品而不加锻炼,欲求自由自发,是不可能的 Zheng Chang wrote in his book The History of Chinese Fine Arts: ”... However, there is no substitute for the national spirit, and the foreign culture is really no help because the national spirit is the blood of the national arts and the foreign culture is the nourishment of the national arts. It is impossible to rely on supplements without exercise and desire to be free and spontaneous