Is “Li Jing's second son, Muzha, a disciple of the Immortal Puxian, wielded a pair of Wu Hook swords and slew enemy generals of the Shang army.” true?

In volume 039 of "Investiture of the Gods" (Fengshen Yanyi), it is recorded: 「我乃九宫山白鹤洞普贤真人徒弟木吒是也……木吒背上宝剑两口，名曰：‘吴钩’。」 In the novel, Muzha is depicted as a distinguished disciple of the immortal Puxian, descending the mountain to assist a wise ruler. The prototype of this character is the attendant of Guanyin in Buddhism, "Muccha" (also known as Hui'an Xingzhe). Like Jinzha and Nezha, Muccha was gradually incorporated into the Li Jing family through the spread of Buddhist mythology. The novel's insertion of him into the Shang-Zhou canonization system is purely a cross-era mythological fusion, having no connection with official history.