Zi Collection, Page Position: Upper, Radical: Bird (niǎo), Page 231, Entry 07 Pronounced kù Meaning: Refers to the hatching of eggs. One interpretation is that it refers to bird eggs. Cited in: "Shu Xi's 'Jin You Fu'": "Guan ji ku yu sui shou." (貫雞㲉于歲首) Cited in: "Han Yu's 'Cheng Nan Lian Ju'": "Hu ku zuan gui cheng." (鹄㲉攒瓌橙) Cited in: "'Na Liang Lian Ju'": "Pan kan kui qin ku." (盘看馈禽㲉) Another interpretation is that it refers to the hard shell on the surface of an object. Also written as 㲉 and 𧈢. Also, Zi Collection, Page Position: Upper, Radical: Bird (niǎo), Page 231, Entry 08 Pronounced kōng gǔ Meaning: Refers to eggs that have already hatched. Also written as 㲉.