After that, the cast started investigation into why Quan Na would want revenge on six people and who the other five could be. They started by asking Quan Na's friends and roommate for clues. Quan Na's best friend, Zhu Cai'er said that Quan Na doesn't have conflict with anyone because she was a nice person and often helps others. However, she also said that Quan Na might have problems with those who bully Fu Ren Yu, a junior in the sculpting department, because he was autistic but was very talented. Zhu Cai'er also said that Quan Na had a quarrel with her roommate about plagiarism before and that her roommate caused her to fail the midterm exam. Her roommate, Zeng Wei, on the other hand, said that Quan Na might be selling herself because she often goes out at night and returns late, and may have been abandoned or found out and had no face to continue living, as one night, she saw Quan Na came back all tattered. Layla said that Zeng Wei seemed a bit strange and may have hatred with Quan Na by saying that, so she suspects that Zeng Wei might be one of the five and Mei Yi agrees with her.