Wei Collection, Upper Volume Radical: Bamboo (zhú) Du Kangxi Stroke Count: 16 Page 894, Entry 01 Pronounced du Thick or substantial. Book of Changes (Yijing): Firm, strong, substantial, and real; the radiance of his virtue is renewed daily. Book of Documents (Shujing): To consolidate the glorious achievements of predecessors. Book of Odes (Shijing): Then consolidate their good fortune. Erya (Erya): Du means firm. Commentary: That which is substantial is firm. Also means pure. Book of Rites (Liji): Conduct oneself with purity and without weariness. Note: It means pure; a pure and single-minded conduct. Also refers to a horse that is ill. Shuowen Jiezi: A horse moving slowly and tardily. Also, when a person is severely ill, it is called du. Records of the Grand Historian (Shiji): Marquis Ying became ill and claimed it was severe. Also a place name. Commentary on the Water Classic (Shuijingzhu): Pingyuan County has the Duma River, which flows northeast into the sea for five hundred and twenty li. Also, rhyming with dui. Yang Xi's Eulogies: Protecting the southern borders, the supervising officer remained steadfast. Holding the military command, the appointment was kept within the territory. Zheng Yun: Also written as zhu.