Zi Collection, Middle Volume Radical: Bird (niǎo) Page 125, Entry 05 In the Jiyun (Jiyun), some editions write it as 䎚. The Huainanzi (Huainanzi), in the "Renjian" chapter, has the sentence "Fèn yì huī 䎚." The commentary explains: This refers to the root of the six main wing feathers.