This zhang blade was made of grayish white jade, with yellow and brown stains and black stripes left by permeation on the surface. Its V-shape edge was delicately ground. Its bolster section has only several shallow grooves, without any bulge. The whole object is well polished. A large number of zhang blades with V-shape edge have been unearthed in the Jinsha and Sanxingdui sites, but such objects are rarely seen in other areas of China. They may be said to be of peculiar Shu style.