He once said that when the ancients did flower and bird painting, no matter whether it was outline filled in with colors or impressionistic splashes of ink, all had to be rooted in observations of nature and did not permit off-the-cuff depictions.
他曾說，古人創作花鳥畫，無論勾勒色彩，或水墨寫意，都必須根據自然的觀察，不容率意描寫。