The inscription on this box refers to Yang Mao, who is mentioned in the Gegu yao lun as being a pupil of Yang Hui of Xitang at the end of the Yuan dynasty and famous for his carved red lacquer ware, see Sir Percival David, Chinese Connoisseurship, The Ko Ku Yao Lun: The Essential Criteria of Antiquities, London 1971, p. 146.