A collector must pay attention to the quality of canvas and paint as well as the structure and colors of a painting before he decides to buy.
他進一步解釋說，看畫時，除了注意畫面的結構、色彩以外，還要注意畫布、顏料的好壞。有些畫布很容易破碎、或顏料容易龜裂，就不適宜買來收藏。