Shen Collection, Upper Volume Radical: Grass (cǎo) Lü Kangxi Stroke Count: 21 Page 1065, Entry 17 Pronounced lü. Book of Odes (Shijing), Zheng Feng: The madder (lulu) grows on the hillside. Erya, Interpretation of Grass: The madder (rulu). Commentary: This is what is known today as madder (qian), which can be used to dye red. Sub-commentary: Also known as earth-blood (dixue). People in Qi call it qian, and people in Xuzhou call it ox-vine (niuman).