When painting portraits, Yang wouldn't let his subjects sit peacefully. For his three renderings of Tsai Jui-yueh, Taiwan's first modern dancer, Yang painted as she flew around the dance floor.
即使是少數留下的人物畫，也不是讓人物靜坐，像是為台灣第一位現代舞蹈家蔡瑞月畫的三張畫作，就是蔡瑞月在現場自由自在地翩翩起舞而完成的。