C240 The Feeling of Being Aggrieved!

Hiding behind the bookshelf meant Wu's view was completely obstructed by books, so he had to rely on sound to gauge where the person was at the moment.

Wu hadn't seen the person enter, but he could tell they must be opposite him since he hadn't heard the door open.

The sound seemed to be coming from across the room.

Though he couldn't pinpoint the exact location