"What? How do you know?" The siblings were shocked and couldn't help asking Lin Sanjiu the same question at the same time, almost inaudibly.
Lin Sanjiu steadied herself but she couldn't help peering out from the gaps between the bookshelves. White smoke rose from the previous attack and slowly spread out in front of Siri's work desk. Lin Sanjiu could see the shallow dent on the ground through the white smoke. Her gaze swept past the dent, landing on the multimedia section. She eyed the same spot for a few full seconds.
"Because… It was too illogical for them to risk coming to the central hall just to ask that useless question. I couldn't help myself, so I tested my conjecture," she replied softly.
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