In 1951, he studied modern art with Li Chun-shan, which was an experience that deeply influenced his thinking about art. In 1957, Ho and his seven colleagues Li Yuan-chia, Wu Hao, Ou Yang Wen-yuan, Hsia Yang, Hsiao Chin, Tommy Chen, and Hsiao Ming-hsien formed the Ton-Fan Group, and were dubbed the Eight Great Outlaws by the news media. This name fully expresses the dynamic and rebellious nature of these young artists, and their creative power which still drives the art world today.