'Bang'
The whole class was startled when they heard a loud noise.
Turning their head to the direction from where the sound came from, everyone was stunned when they saw Mu Jun standing straight with his fist clenched. The chair he was sitting on was now lying on the floor. With a look, one could guess that Mu Jun had stood up in anger causing the chair to be pushed back and fall on the floor.
Initially, Mu Jun was least bit interested in the class and was just sitting in his chair deep in thought. It was not when Sia was questioned did he look up at her with a mixed expression. Later when he saw Sia and John leaving the class after fooling the teacher he was quite annoyed, not at Sia but at John. While he was still annoyed he heard Shen Yi and Yang Jie's conversation.
Initially, Mu Jun was least bit interested in their conversation but then when he heard them take Sia's name his ears immediately straightened, and listened to them curiously.