拍品专文
Several jade zhang of this type, which appear to have equally thin blades, in the Winthrop Collection, are illustrated by M. Loehr, Ancient Chinese Jades, Fogg Art Museum, Harvard University, 1975, pp. 172-5, nos. 223-26. Unlike the present zhang, none of the Winthrop examples have the addition of the 'teeth' joined by slanting grooves.