I recommend the novel "Monster's Best Friend" to you. Although it's not a Xianxia story, it's still a fantasy novel. The main character is a Summoner who pursues eternity. His female master is cold and selfish. Although the relationship between the protagonist and the female master was not very clear, the female master played an important role in guiding the protagonist to explore the fantasy story in the mysterious world together. I hope you like this fairy's recommendation. Muah ~๐