At the same time, he was paying attention to the gait and aura of those black-robed people heading towards different rooms.
The dust distribution on the ground at the entrance of most rooms was even, and the doorknobs were as bright as new, clearly frequently visited.
But there were a few rooms.
The dust on the ground was noticeably thicker, and the doorknobs appeared slightly dull.
Fang Qingyu quickly calculated in his mind.
He led Jiang Wei, silently following the crowd, from the passageway entrance all the way to the end of the passage.
At the end, he naturally paused for a moment, as if discerning direction, then very naturally turned around, retraced his path.
Throughout the entire process.
No one lifted their heads to give them an extra glance.
Everyone's attention was focused on their feet and the destination ahead.
Just as he was walking back to the middle of the passageway, Fang Qingyu's gaze locked onto a door on the right.
