After Passing Through the Book, I Became a Cannon Fodder Female Supporting Role

There is a cannon fodder female supporting role, who comes from a wealthy family, is arrogant and domineering, pinches everyone at every sight, pinches ghosts at every sight, and is arrogant. The mother is not here, the father doesn't care, and the stepmother and step-sister are secretly playing tricks on each other. She has a bad mind and breaks the heart of her only biological brother. She offends all the followers of the male protagonist and the female protagonist. She rushes all the way to death, and dies miserably. Wei Jinzhu walked in just when the original owner died. I thought that as long as my brain was good enough, I could turn the tide and embrace the male protagonist, and becoming the heroine would not be a problem. But the question is, why did he appear here in his previous life? From then on, the cannon fodder female partner became a tangled female partner...