C174 He Didn't Listen to the Words of an Expert

"Something's wrong? What's wrong? " Chen Feng asked curiously.

Lu Qi narrowed her eyes and looked coldly at the wall at the back of the classroom.

That wall was calm without any waves, and it seemed like there was nothing unusual about it.

But... She didn't know why, but she felt as if there was something faintly moving within that wall.

Was it air currents?

Or..