William knew the elder was already in his pocket. Even if he lacked strength, by using the right methods, he could turn such a scary spirit master into his lackey!
"I don't want to trouble senior," William still acted as if he was surprised or something.
"I don't have anything else to do anyway, so come," the elder gestured for William to enter the library with him, "this place is too big to visit it all in a single day. I'll take care of things and you can stay here inside as long as you want."
"Thanks senior," William cupped his hands, showing a fake attitude of gratitude. Exchanging tens of spirit crystals for fifty thousand or more? That was indeed quite a cunning move from such an elder.
"But I have classes to attend, so can't stay here for more than two days…"
"Don't worry about that, I'll let you enter anytime you want. Just come here when you have time later, ok?"