The Reborn Good Girl Has a Touch of Madness

(Period setting + face-slapping + taking down scumbags + sweet romance + pocket dimension + a touch of mysticism + cultivation + reclusive spiritual-cultivator heir VS sweet but unhinged young lady) All she wants is to return to the Earth's core and avenge her mother. Reborn in the body of a pitiful girl who shared her tragic fate, she inherits the original owner's memories and immediately decides to make her false biological parents pay, beat up the fake older sister who abused her, empty the family fortune as compensation, and report them so they can be sent off for re-education. With spiritual energy scarce on the surface, she needs to gather what she can, so she has no choice but to settle in a mountainous area. When she meets him on the train, she can tell at a glance that he, like her, cultivates spiritual power. When he discovers her secret, she considers killing him. But he seems not to care about the murderous intent in her eyes at all. Instead, he affectionately pats her on the head, helps her keep her secret, and protects her from people who might target her. She can sense that he treats her differently, but until she returns to the Earth's core to avenge her mother, she dares not, and does not want to, let herself be caught up in love. Their first encounter leaves him surprised. Unable to make physical contact with women, he grows curious about her. When he discovers her little secret, his first thought is how to protect her, not how to use it against her. Once he realizes he likes the girl, he confesses in a joking manner, only to be rejected. She even starts avoiding him, keeping to herself and constantly disappearing into the deep mountains and forests. Though he knows how capable she is, he still worries she might be in danger. Even if all he can do is follow at a distance and keep an eye on her, he is content. (When it comes to the heroine, the male lead occasionally talks himself into falling for her and gets a little love-struck. With everyone else, he's calculating, cold, and utterly merciless.)