The timeline goes back to one week before the opening of the Fate Space.
Every night.
Inside a partition of the Stargazing Room.
Han Dong has been conducting special studies and training here. Except for Mr. Black White, nobody knew what Han Dong was doing inside.
Mr. Black White promised.
During the study period, he would not disturb Han Dong, let alone peek into Han Dong's training process, letting him have full freedom.
What Han Dong was studying was a book that came from outside the city - the "Eye Manuscript of the Book of Dead Spirits" (In non-special circumstances, it is referred to as the "Eye Book").
Han Dong's perspective on the book was entirely different from the original holder, Baker Marcellus.
What Lord Baker valued was how to create contaminants, and how to obtain powerful Extracity Powers through sacrifices.
But what Han Dong focused on was - [The Eye].
That's right.