But just at that moment, all four of their phones started to vibrate violently.
"Beep-Beep—Beep-Beep—"
An unprecedented alarm sound effect burst forth.
The four looked at each other.
Emergency rescue?
Without a second thought, they accepted the call, and the standard AI voice followed.
"Rescue call! Rescue call!
"A Secret Realm has erupted 9 kilometers from your location; you have been listed in the Vanguard rescue team. Please immediately report your estimated time of arrival!"
The four were stunned and simultaneously covered the speakers of their phones.
"Go?" the guide with the long fringe was the first to lose his initiative, frantically operating his phone, "The data shows it's a level 2 Slaughter Type... There won't be any upgrade for us."