Usually, it is used as a passive alarm, functioning as a doorbell, but Mother Gao Ser was witnessing it for the first time.
"Who are you looking for?" The peephole on the wooden door of the stone tower slid open, revealing a pair of cautious eyes staring at Gaven and Mother Gao Ser.
"Is this Mage Haransen's residence?" Gaven was unsurprised by the vigilance of the other party. After all, no one would readily open their door to strangers in the dead of night. To demonstrate goodwill, he immediately deactivated the combat armor he had just activated.
"Who are you? I don't know you. What do you want with me?" Mage Haransen showed no intention of opening the door, and his cautious demeanor deepened.
