The female lead's name was Xi. Modern... novel

The female lead's name was Xi. The plot of a modern romance novel was as follows: Xi was a modern girl who lived in a wealthy family. However, her parents were not perfect. They often quarreled. Xi Xi also had a bad stepfather. He was always angry at her. Xi was very popular in school because she had a smart brain and a beautiful appearance. But she was not happy. She felt that she could not change her life or her stepfather's attitude. One day, Xi received a mysterious letter with the words "You are in my heart". Xi Xi began to feel uneasy, not knowing what this meant. But when she opened the letter, she found herself involved in a mysterious conspiracy. She found out that she had been chosen to be a candidate for an organization whose purpose was to save the world. Xi Xi must use her intelligence and beauty to overcome all kinds of difficulties and finally become the leader of this organization. Xi began a thrilling journey. She met various characters, including a mysterious man and a smart and brave girl. They worked together to overcome many difficulties and finally saved the world. Xi Xi found that she had not only become the leader of this organization but also the leader of the people of the world. She became a real hero, and everyone respected and worshipped her.