上海施蛰存先生曾作过一首七言歌行《夷门三子墨妙歌》,其中有句云:“春衫白袷子桑子,好学深思未渠已。红尘白日谋稻粱,黄卷青灯涉文史。十年染翰柿填门,臣斯妙迹参差是。”这首诗作于1972年,所称“子桑子”者,乃著名书法篆刻家桑凡先生。那时桑凡先生40岁出头,与寓居开封的李白凤、武慕姚同尚篆隶, Shanghai Mr. Shi Zhecun had made a seven-song line “The barony Mia subtle Miaogong song,” which has the cloud: “Spring shirt white raccoon Son of the child, studious pondering. , Yellow Rolling Glaze lamp paper history. Ten years dyed Han persimmon fill the door, Morriss miraculously staggering. ”This poem was made in 1972, known as “ son Sangzi ”, is a famous calligraphy and seal cutting Mr. Sang Fan . At that time, Mr. Sang Fan early in his 40s, and lived in Kaifeng, Li Bai-feng, Wu Mau Yao Shang Shangzhili,