Zi Collection, Middle Volume Radical: Horse (mǎ) Page 1100, Entry 07 Explained in "Zihui" as "yao" (rising tone), same pronunciation as "biao". Same meaning as "biao". Refers to a horse's bit. In "You Xian Shi" by Wang Yuan Chang, there is the line "Zhulong dao qing 䮽". [Note] Zhulong is the deity who drives the sun. The meaning is that wherever the immortal rides his horse, Zhulong guides the way.