Hai Collection, Lower Volume Radical: Rat (shǔ) Entry: Shu Kangxi stroke count: 20 Page 1528, Entry 31 Supplement to the Collection of Characters (Zihui bu): Pronounced xian. Erya: Explanations of Beasts (Erya shishou): The shu rat. Commentary: Currently, in the mountains of Jiangdong, there is a shu rat; its appearance is like a rat but larger, gray in color, and it lives in trees.