Let me recommend a few well-written Xianxia novels to you: "There's an Immortal Master from Heaven at Home","Salt-free City: The Princess's Immortal Cultivation","The Love of Samsara and Three Lives". They were all classical Xianxia novels with compact and exciting plots and vivid characters. Moreover, the entire book had been completed, so he could read it without worry. I hope you like my recommendation.π