That was a wall—at least ten meters by three meters—and the entire wall was filled with bookshelves without a single gap.
The bookshelves were firmly embedded in the wall, and every shelf was packed with books; this wall alone had at least a thousand books.
"This, sss..." Xiao Yi, seeing this, couldn't help but gasp, "Are we supposed to find the clue to open the door among all these books? Isn't that a bit..."
"...What?" Hart walked over and said, "Indeed, it does seem a bit tiring, doesn't it?"
"..." Xiao Yi paused for a moment before asking, "Can I go back?"
"Oh come on..." Hart immediately reached out, ready to persuade, and said with a smile, "Since we're already here, let's just look for the clue. Think of it as a form of entertainment."
Xiao Yi: "..."
Meanwhile, Wei'er had already started investigating.
She felt around the bookshelves and knocked on them, attempting to find some mechanism to open the door.