Zheng Wuchang:color and ink landscape handscroll, inscribed, signed, with seal marks, frontispiece signed, with three colophons 171 3/8 in (435.0 cm) x 11 7/8 in (30.0 cm) Provenance: Private Southern California collection 鄭午昌 設色紙本 山水 長卷 來源:美國南加州私人收藏