Wu Collection, Upper Volume Radical: Jade (yù) 璋 Kangxi stroke count: 16 Page 741, Entry 13 Pronounced zhang. As defined in the Explanation of Simple and Compound Characters (Shuowen Jiezi), a jade ritual object with a sharpened top is called a gui, and half of a gui is called a zhang. In the ritual system, there are six types of jade gifts: a gui is presented with horses, a zhang with furs, a bi with silk, a cong with brocade, a hu with embroidery, and a huang with axe-patterned cloth. As stated by Xu, the term yan refers to the act of sharpening. Book of Odes (Shijing), Small Odes (Xiao Ya): Let him play with the zhang jade. The commentary states that half of a gui is called a zhang. Rites of Zhou (Zhouli), Spring Offices (Chunguan), Office of the Grand Minister (Dazongbo): Use the red zhang to offer rituals to the south. According to the specifications set by the jade craftsman, the large zhang and the medium zhang are nine inches long. The bian zhang is seven inches long, with the pointed part measuring four inches and a thickness of one inch. The ya zhang and the medium zhang are seven inches long, with the pointed part measuring two inches and a thickness of one inch. Also, zhang di she. The commentary notes that she refers to the sharpened corner part, and di she means to carve out a sharp corner. Additionally, in sacrificial rites, the Son of Heaven uses the gui zan libation cup to perform the initial libation, while the assembled officials assist by using the zhang zan libation cup to perform the secondary libation, held by the attendants on the left and right. Book of Odes (Shijing), Greater Odes (Da Ya): The solemn and respectful king, with attendants on the left and right holding the zhang zan.