Liu Fu-cheng points out that although Jen Li-yu's calligraphy was neat and exact, his characters were written a size too large, which enabled one to perceive that within his disposition there coexisted a conflict between the qualities of steadfastness and wildness.
劉復誠指出，任立渝的字跡雖工整、但卻很大，可看出他性格中「穩重」與「粗獷」兼具的矛盾。