我黑皮兄弟变成了女孩子

Does Ning Cheng need her pity and sympathy? If she wasn't her sister, could she leave the earth and start real cultivation? But Ning Cheng relied on himself from beginning to end. Her elder sister had told her that in the world of cultivation, the jungle prevailed over the strong. So what was wrong with Ning Cheng working as a domestic servant behind the man named Duan?...