For instance, in the painting titled "Giraffe," Cheng used a red background and orange sun to represent the searing heat of Africa. The emphasis on the long neck of the giraffe symbolized its aspirations and hopes.
長頸鹿，是鄭明進特別為這次展覽的請帖而繪製的，他用紅底和橙紅渾圓的太陽象徵非洲炎熱的氣候，只畫出長頸鹿的上半身，強調長頸鹿的長脖子，含有翹首期盼之意。