Hai Collection, Upper Volume Radical: Horse (mǎ) Entry: Su Kangxi stroke count: 22 Page 1445, Entry 03 Broad Rimes (Guangyun): Pronounced su. Collected Rimes (Jiyun): Pronounced su. Jade Chapters (Yupian): Susu, an excellent horse of ancient times. Also in Collected Rimes (Jiyun): Pronounced suo. The meaning is the same.