Zi Collection, Upper Volume Radical: Hair (zhěn) Page 94, Entry 01 In the Explaining Graphs and Analyzing Characters (Shuowen Jiezi), this is the original form of the character. It cites the Book of Odes (Shijing), which says: "Black hair like clouds." Note: In the Odes of Yong section of the Book of Odes (Shijing), it is now written with the character meaning black hair.