In oil painting works created by Chang Yu, most of painting subjects are drawn from his familiar life acted as a literati, thus to express his inner feelings and ideals. the background, kept plenty of blank space, with clear lines outlines, simple and concise structure, both can embodies the Freehand context of Chinese Painting and Calligraphy, no matter people, animals or still life, all looming a type of nostalgic sense of loneliness.
Sa langis painting gumagana nilikha ng Chang Yu, karamihan ng mga paksa painting ay inilabas mula sa kanyang buhay pamilyar acted bilang isang mga edukado, ganito na ipahayag ang kanyang loob na mga damdamin at mga mithiin. ang background, iningatan ng maraming blangko ang puwang, may malinaw na linya binabalangkas, simple at maigsi na istraktura, kapwa ay maaaring embodies ang kalayaan sa pagkilos konteksto ng Intsik Painting at kaligrapya, kahit tao, hayop o pa rin buhay, lahat ng looming isang uri ng nostalhik kahulugan ng kalungkutan.