641 Inheritance+Great Achievement!

Xue Xi was stunned when she saw the scene inside.

The office door and windows were closed and filled with the smell of ink and paper. It was stuffy, as though there had been no ventilation for a few days. Moreover, the light was very dim. It was clearly daytime, but the curtains were drawn and the lights were on. It gave off a strange feeling.

Feng Xingshen had his hands behind his back as he stood in front of the blackboard. He stared at the rows of equations written on it and paced back and forth. As he walked, he mumbled something as though he was possessed.

Zhou Hong was stunned and said, "Teacher?"

Feng Xingshen ignored him and continued staring at the blackboard. Even though his body was moving, his eyes were not moving. He ignored Zhou Hong's words as though he did not hear them at all.

Zhou Hong panicked and looked at Ji Silin, asking, "What's wrong with the teacher?"