Zi Collection, Page Position: Upper. Radical: Flesh (ròu). Page 986, Entry 03. According to the Compendium of Phonetics (Jiyun) and the Classified Dictionary (Leipian), the pronunciation is zheng. It has the same pronunciation as zheng. It refers to the tendon of the heel. Also, according to the Compendium of Phonetics (Jiyun), the pronunciation is xing. The meaning is the same.