In three days, Gu Xi only managed to copy half of the "Netherworld Secret Scroll," a book of the same level as the "Death Manual," and a third of the "Yellow Springs Atlas."
However, his Necromancers were quite competent, completely copying the "Book of the Box of Fate," "Blood Feast Book," "Book of the Grub," and "Book of Deceit."
They even copied over twenty forbidden books like the "Bone Dragon Compilation" and "Death Language."
To have the Necromancers copy these forbidden books, Gu Xi had to provide them with new Necromancers every hour.
Plus, with the books Gu Xi copied himself, it's safe to say he didn't close his eyes even once in those three days.
This made Gu Xi, who was already somewhat thin, look even more haggard.
But all this effort was worth it.
The forbidden books Gu Xi obtained are things an Undead Mage must master in later stages.
