Who married the sage of the underworld in the novel of cultivating immortals?

It's uncle Zheng's daughter. It's Taishuzheng's daughter, married to the sage of the underworld in Xiuxian's novel. Novel is a literary genre in which the author makes an artistic summary of social life, depicts life events, shapes characters, unfolds the theme of the work, expresses the author's thoughts and feelings, and reflects and expresses social life through the narrator's language.