" It's a laughable lock—one that you would use only to guard a graveyard. Not that anyone would trouble themselves invading a timber hut in a mangrove forest farther away from the Bay of Bengal. Still, how can someone live with a lock like that? Made of ancient iron, reeking of rust. It would need a primordial key to be twisted and turned, going through several moments of mechanical trouble until the old lock opens. Good luck if you can do that without breaking the key.

Oh! The key … Well, the owner of the hut has left the key right beside the lock, including instructions. The Monk, Yuan Yagmur—revealing his muscled arms from under his wide, dark shawl—takes the note (the one with instructions):

Please, scan your CRAB first before touching the key. For your own safety.
From what, you ask? It’s a surprise.
Enter without scanning if you want to find out.
—Mee-Hae Ra

"

― Misba , The Oldest Dance (Wisdom Revolution, #2)