C516 Monks and taoists

"Hall Master!" This is bulletproof glass! " It was hard to imagine that a school's library door was actually made out of bulletproof materials?

Xi Shangyun squinted his eyes, "No wonder the old man likes this place so much, in all these years, he has never cultivated good techniques before, I thought he was stingy!"

So that's how it was!

He turned his head, looked at the situation inside, and