"Key? What key?" Ivan asked curiously. Since Conner told him that the Ministry of Magic of North America would hold this joint conference, this so-called key has been mentioned by several people, which seems to be quite important.
Conner looked around, looked at the noisy crowd around, walked in a few steps, lowered his voice and said. "Have you seen the magic exposure level clock placed above the hall?"
Ivan nodded. Pierce had done a science popularization for him just before he entered the door. It can be used to monitor the global conflict events and assess the exposure process of the wizard world