Han Su seriously considered Chao Xiaobei's suggestion, then left the Ancient Castle.
The method was simple. He had already observed that the key to leaving the Ancient Castle this time was on the Pale Giant.
With Han Su's current abilities, finding an opportunity to take the key from him was no longer a life-threatening challenge.
However, since he had more time and could make preparations before leaving this time, Han Su also gave serious thought to how the supplies in the Ancient Castle should be distributed.
For instance, Chao Xiaobei would be staying in the Ancient Castle to continue exploring and researching. Han Su wasn't stingy, of course. He told him about his secret room beneath the castle, as well as the hidden passageways and compartments, so he could make use of them.
He also asked Chao Xiaobei to feed the cat from time to time.
After all, it was important to bond with the Black Cat Duke in this gloomy castle. It might even save his life.
As for Han Su, he retrieved the cloak and mysterious white mask from the secret room and put them in the Briefcase.
Both items were connected to the Emperor and would be needed in the mysterious ritual Grotesque Doctor had mentioned. Han Su knew that he couldn't avoid dealing with the Emperor when he returned to the future this time, so he had to bring them along.
Once he had finished, he went up to the fourth floor. Without alerting the Pale Giant, he used the Number 01 Cipher Incantation to take the key from him.
In the hall, the mysterious phone suddenly began ringing again.
Han Su glanced at the phone and exchanged a look with Chao Xiaobei. Then, without hesitation, he headed for the emergency exit.
Behind him, Chao Xiaobei