1. Liang sees her younger brother Bao staying late after earth science class, struggling with the subject. She knows the final exam is coming up and wants to help him do well.
2. Liang and Bao are close, though Bao is talented at writing while Liang excels at science. Liang worries about how Bao is doing in earth science.
3. To help Bao without pressuring him, Liang asks him to review a paper she is writing, knowing he will enjoy discussing her topic on Herman Melville. When he realizes her intent, Bao accepts her offer to study earth science together.