Zhang Xiao hurriedly packed everything back into the suitcase, then turned the Room of Requirement back into his usual reading room.
Haste would get him nowhere. He brewed a cup of hot tea and even washed his hands before sitting down at the desk and placing the rolled-up parchment before him.
Magic was always so convenient. The scroll unfurled on its own and floated before him, soft light illuminating the parchment as though he were reading in natural daylight.
One glance was enough to make Zhang Xiao frown. Most of the parchment he had obtained concerned the dissection and study of fantastic beasts and humanoid creatures.
Centaurs, dragons, trolls, giants, house-elves, goblins, Veela, leprechauns...
The experiments were extremely bloody, yet Slytherin had recorded them in a remarkably dispassionate manner, as though he had cast aside all emotion.
Zhang Xiao could not make much sense of the experimental data, but Slytherin occasionally inserted a few concluding remarks:
"...Dragon blood is hot and poisonous. Introducing it into the human body has severe consequences. Muggles cannot withstand dragon blood.
Injecting the Dark Wizards I captured with dragon blood produced adverse reactions such as madness and bloodlust.
One began growing scales, but they disappeared again within a few days.
Perhaps I should try suppressing the Dragon Heart directly?"
"The Dragon Heart is too large and highly resistant to spells. It took me a long time to miniaturize one using alchemical objects in conjunction with spells.
The man whose heart I replaced died soon afterward. Blood seeped from every inch of his skin. Damn it, the Dragon Heart pumped blood far too forcefully!"
"Unicorns have a strong resistance to darkness and negativity. Perhaps I should spend more time on them..."
"Injecting unicorn blood into a human body actually produced a remarkable effect. The Muggle