Having lived in Japan for so many years, Chang has come to know countless renowned Japanese artists. He remains devoted to the young painter and Tokyo University graduate Senju Hiroshi, collecting works from various periods of his career.
旅日多年，他所接觸的日本美術界名流不計其數，他卻獨鍾畢業於東京大學的青年畫家千住博，並收藏他各時期的作品。