Does the Real Heiress Know She's Wrong?

Gu Cheng, the junior sister of two masters of mystical medicine, was expelled from the mountain sect by her master and sent down the mountain to undergo a trial. According to her master, she would face a family-related trial at the age of nineteen. Once she passed it, her life would go smoothly and end in fulfillment. Gu Cheng scoffed at the idea:

This body wasn't even hers. She was just a wandering ghost who had borrowed a corpse to return to life, and she had already reunited with her biological parents. Her family loved her like a precious jewel. How could they make her undergo some trial?

Only after coming down the mountain did she learn that the parents tied to her trial weren't her biological parents in the spiritual sense, but the biological parents of this body: the Lin family, a renowned wealthy clan in City A.

Fine, that was fair enough. Since she'd taken over their daughter's body, repaying them for giving her life was only right. But she never expected to receive a baptism of "love" on her very first day in the house:

Her mother: "So what if she's adopted? I've raised her since she was little. Don't think you can bully her just because you're related by blood."

Her eldest brother: "If you want to return to the Lin family, behave yourself. Don't covet things that don't belong to you."

Her younger brother: "Just anyone can't be my sister. I have only one sister."

The unfortunate real heiress, Gu Cheng: "..."

Could it be that I came to break this family apart, not join it?

Theme: Your fate is in your own hands