Chapter 45: After Two Hundred Years

I noticed something while searching for the Library door. Apart from the main entrance to the mansion and the main hall, all the doors in the Avereza Mansion are of the same size. I said before that the door is actually a book but it's really a door designed in such a way that it looks like a book. It's made to look like an open book and there are 6 rectangular spaces placed in triangles on the door. Three on one side of the door, 3 on the other side of the door. Another rectangular space was found not on the door but on an anvil-like stone block in front of the door. I am pretty sure this book I have right now goes there.