Chen Collection, Middle Volume Radical: Tree (mù) Zhen Kangxi strokes: 13 Page 540, Entry 22 Pronounced zhen. According to the Explanation of Simple and Compound Characters (Shuowen Jiezi), it refers to a rigid wood. Classic of Mountains and Seas (Shanhaijing): On Mount Tai there is much zhen wood. Commentary by Guo: This is the female zhen tree. It does not wither in winter. Also, zhengan refers to the two wooden stakes erected for building a wall. Classic of History (Shangshu), chapter Fei Shi: Prepare your zhengan. Commentary by Kong: The part placed at the top is called zhen, and the parts at the sides are called gan. The zhen is placed at the two ends of the wall, and the gan are placed along the sides of the wall. Also, Zhenlin is the name of a county. History of the Former Han Dynasty (Qian Hanshu), Geography Treatise: Belonging to Shang Commandery. Textual Research: In the Classic of Mountains and Seas, it states there is much zhennu on Mount Tai. Based on the original text, zhennu has been corrected to zhen wood.