chapter 523 Man with sunglasses!

"Everyone, wait a moment, I'll go out to take a call."Frank Fang said to the confused students, turned around and left. Before leaving, he suddenly remembered something and walked to a student in front of him and asked, "Can you tear a piece of paper from your notebook and give it to me?" The student nodded, tore off a piece of white paper and handed it to Frank Fang. Frank Fang took the paper, walked out of the classroom, and came to the stairs. He folded the paper quickly...