I Heard I'm the Female Lead's Foil

Lu Manxi dreams that she is the female side character destined to be a foil in a book, and she is furious. She is the heiress to the prestigious Shengshi Group, yet somehow she's supposed to be someone else's stepping stone? Anyone who wants to use her that way had better prove they have what it takes. A certain taciturn man says, “Anyone who tries to hurt my young lady can get lost.”