Aunt Xi opened the door to the vault in one go. What she didn't know was that Feng Wu arrived as soon as she did.
Once inside, Feng Wu hid in a secluded corner.
Little Phoenix couldn't hold on much longer. The Invisibility Spell disappeared as soon as Feng Wu hid herself.
If Aunt Xi turned her head now, she would immediately spot Feng Wu.
Unfortunately,
Aunt Xi was too absorbed in the box to notice that someone had followed her in.
Right now, Aunt Xi was carefully holding the small box as if she was holding a baby.
She didn't know what button Aunt Xi pressed, but there was a click.
There was a faint sound.
Feng Wu looked out of the gap and saw that Aunt Xi had opened a row of bookshelves.
She then took a book out of the shelf.
After she opened the book, Feng Wu read it under the moonlight, only to find that it was hollow.
Aunt Xi put the small box into the book, then put the thick book back on the shelf.
