The Villain Is a Sis-Con?!

Sui Xi stayed up all night to read a novel and the next day she was taken by a group of men in black to a dark villa.
The head in black: “Mr. Su and Mrs. Su died unexpectedly many years ago. We were employed by the Su family to find the missing Miss Su. According to DNA comparison, you are the long-lost daughter of the Su family. You also have an older brother, Su Jingcheng.”
Su Xi: Su Jingcheng?! This name is a bit familiar, isn’t it the villain in that novel I was reading yesterday?!
In the novel: Su Jingcheng is a big villain, this big villain is cold and perverted, and will eventually be done in by the male lead and the two second male leads..