Si Collection, Upper Volume Radical: Water (shuǐ) 測 Kangxi strokes: 13 Page 635, Entry 01 Pronounced cè. According to the Explaining Graphs and Analyzing Characters (Shuowen), it denotes the depth reached. According to the Jade Chapter (Yupian), to measure depth is called ce. It is also used as a general term for estimation. As stated in the Book of Changes (Yijing), in the chapter on Appended Remarks (Xici), that which Yin and Yang cannot measure is called divine. It also means clear. According to the Rites of Zhou (Zhouli), in the section on Winter Offices, Artificers Record (Dongguan Kaogongji), when a bow-maker applies lacquer, he desires it to be clear. Also, ce-ce denotes the sharpness of a blade. As noted in the Book of Odes (Shijing), in the section on Odes of Zhou (Zhousong), commentary on the poem Good Are the Plows (Liangsi), the term ce-ce is synonymous with ce-ce.