The Perpetrator of the Meteor

Lu You, who came from a small mountain village, was taken back to the Zhou Mansion as an illegitimate daughter. She thought that she had turned into a phoenix and had good luck, but she didn't know that she was like a sheep in a tiger's den, and she would never recover. Who is her father and why her mother died tragically? Each of these mysteries seems to be related to her brother who always smiles. She didn't know that behind that bright smile, there was still a sharp knife hidden, ready to stab her.