Castle of Black Iron could be called Zhang Tie's strongest trump card and greatest support. As long as Castle of Black Iron existed, Zhang Tie could repeatedly turn danger into safety and overcome every hurdle. Yet now, in this strange place of unknown origins, just as Zhang Tie wanted to use Castle of Black Iron, he discovered that it could no longer be used. Even Zhang Tie could not help but feel a flicker of panic.
"Heller, Heller, can you hear me?" Zhang Tie hurriedly called out to Heller within his Sea of Consciousness. In Zhang Tie's experience, even if Castle of Black Iron could not be used, his connection with Heller would not be easily severed. As long as that miraculous arched gateway of Castle of Black Iron remained within his Sea of Consciousness, he would be able to contact Heller no matter what.
"I can hear you, Fortress Master. Congratulations on surviving such a great calamity..."
Heller's voice appeared in Zhang Tie's Sea of Consciousness, as composed as ever, though now carrying a trace more emotion. That calmed Zhang Tie a little.
"What's going on? Why can't I access the things inside Castle of Black Iron? I can't use the spatial function of Castle of Black Iron!"
"Does Fortress Master remember your experience in the Time Tower? Once the Time Tower was activated, Fortress Master was likewise unable to use Castle of Black Iron!"
"Ah, what did you say? Are you saying this place I'm in now is the Time Tower?"
"This is not the Time Tower. However, certain irresistible forces generated by this world's distorted spacetime structure have restricted the use of Castle of Black Iron here," Heller said calmly.
"Why is that?"
"Does Fortress Master remember your first sensation when you entered this world?"
Zhang Tie