In the end, Teacher Fairy didn't attack. There was a dread feeling creeping inside her that seemed to warn about what she's about to do. She always believed her gutfeeling so she refrained from taking action.
Seeing that the other party wasn't attacking, Jin Rou chuckled but didn't taunt the fairy again. Instead, he walked past the chariot and entered the ruins.
"Hey, wait! This place is not for anyone!" Teacher Fairy shouted, "If you don't believe me, you can see the scattered bones here for yourself. They are the ones who died after trespassing this place. No one is allowed to enter the ruins or else the grand formation there is enough to kill even Imperial Lords!"
The fairy wasn't bluffing. According to the Headmaster of the academy, this place had a terrifying killing formation that once triggered, it would kill everyone who was present there. It wouldn't stop unless it had killed all trespassers.