Cheng believes that the theory of Peking opera and of Zen can be applied to all forms of Chinese art. Technically, Chinese painting abdicates realistic perspective to emphasize impressionistic perspective. Though the style fails to convey a sense of depth, it has achieved a unique psychological plane. Dull sketches only reproduce the contours of objects.
鄭善禧認為「平劇」和「禪」是中國藝術的內在根本，在技法上，因為受禪宗「即心即物」的影響，中國畫捨棄了寫實的視覺透視法，而著重於描摩神韻的心象透視法，失去了空間上遠近的感覺，但成就了心理上獨特的情趣。