Amountain man, the prodigal child, and Chinglan discuss the merits of an old phone. Chinglan says that his phone is strong and sturdy, and that it is a great way to play with walnuts. The prodigal child says that he is studying hard, but Chinglan is using his phone to study hard work. The class begins, with Chinglan forgetting to bring his textbook. Everyone asks why Chinglan did not bring it, and he replies that he only wanted to go outside and play with his phone. The next question is, "How rare is it that a student pays so much attention in class?" Chinglan refuses to answer the question, saying that he does not want to be punished for not answering the simple question.