Guangchengzi (simplified Chinese: 广成子; traditional Chinese: 廣成子; pinyin: Guǎngchéngzǐ; Wade–Giles: Kuang ch'eng-tzu) is a character featured within the famed ancient Chinese novel Fengshen Yanyi.
He has sacrificed many upon many of years to solitude and has emerged as an immortal. Originally, this superiorman had been within the Peach Stream Cave of Mount Nine Elves. After he, along with his fellow immortal by the name of Red Nudeu had been passing by King Zhou's capital, Zhaoge, two very large beams of red light from heaven had impeeded Guangchengzi's path. After Guangchengzi personally saw beneath him the unfortunate events taking place - the near execution of both the crown princes - Guangchengzi would say that it would be best to create a very large tornado over the capital and use the confusion to steal both of the princes -- as to ensure the creation of the new dynasty. Thus, this action is effectively performed, and Guangchengzi has vowed to heaven that he won't stop until both of the princes are well trained in the art of rulership -- a fundamental obviously not enforced by the fool, King Zhou.