The guards at the security station hadn't paid much attention to Yu Liang as he passed by, since his carry-on bell was ringing loudly and he was running so fast that the endpoints on the line segment couldn't be clearly seen. But now, upon the professor's reminder, they immediately turned their heads and looked toward Yu Liang's rapidly retreating back.
"Stop right there!" several of the shapes shouted, ready to chase after him, but the other players in the classroom weren't fools, either. Having witnessed (mostly by hearing) Yu Liang's escape, they followed suit and rushed out of the classroom.
They were not stupid; they could feel something in the increasingly tense atmosphere.
If they didn't run now, they would truly all be left behind. Who would want to stay and discuss the Three-Dimensional World with this professor? That would be insane!
