Sung was very knowledgeable about Chinese traditional painting, calligraphy and Peking opera, and was also a dab hand at playing the erhu (a Chinese traditional fiddle). Although he taught economics, his bookshelves held many works on traditional architecture, Chinese design motifs and caihui-decorative color painting.
對國畫、書法、京劇都頗有研究，還拉得一手好二胡的宋膺，教的雖然是經濟學，然而他的書架上卻有許許多多傳統建築、中國圖案及彩繪的書籍。