The world building in here is quite mixed-up. There are blood-clans who are definitely not vampires, but something like a creature who uses their bloodline like mana/magic. And it’s not completely an inanimate thing (that bloodline), because it thinks albeit like a child and has free will to do as it wishes. You can treat it like a black cat familiar to a witch. In her original world from where the heroin comes from - she already has a background of mixing up with fringe elements like mages, witches and the like. She hasn't seen them, but have spent hours and hours reading about them in her father's library. And they are not just stories for her (although the heroin's father seems to treat them as fairytales) they are definitely not just fairy-tales; they are records of creatures living in her previous universe of who’s authenticity the majority, the people of her realm have no idea about. It’s a pity that Wei Zhiruo, the heroin, never gets a chance to meet any such creatures before she travels to another world (in the beginning of the story). But this experience, is not futile. It helps her to form an idea about her own belongingness, her own idea about self/identity and see and recognize new events that are fantastic - and yes, which aides her as the opportunity to cultivate as an immortal comes to her. She is not someone, who has read xianxia stories like a normal modern person traversing to another world - no! She actually doesn't have the littlest idea of which kind of world she had landed into, it is for her to discover and enjoy. But this ignorance surely gives her a chance to interpret this new world with all the fantastical knowledge about universe and space she already knows and find a bridge in the new land, which is completely unfamiliar to her and turn it into her second home.
