Within the sacred mountain that rose from the center of Castle of Black Iron was a vast hollow space. Heller said that such a structure could turn the place into an enormous warehouse while also conserving Castle of Black Iron's Basic Energy Reserve.
After Heller completed this spatial and terrain transformation, Castle of Black Iron's Basic Energy Reserve was nearly depleted again. The burden of expanding its Basic Energy Reserve would still have to rest on Zhang Tie's shoulders.
Everything Zhang Tie had plundered from Tokeyi City was now stored inside the mountain's belly.
The entrance to the mountain's belly was on the northern side of the summit, sealed by a stone gate. Inside lay neat steps beneath one's feet, while two orderly bands of glowing fluorite ran along either side of the passage, illuminating the interior brilliantly. It felt like entering a meticulously constructed underground chamber steeped in fantasy. Castle of Black Iron's ability to reshape space and terrain truly possessed the uncanny power of divine craftsmanship—who could imagine that all this had formed naturally? Especially those naturally formed fluorite bands along both sides of the passage; in Zhang Tie's eyes, the arrangement was simply perfect, unforgettable at first sight.
As he walked down the neat steps, Zhang Tie suddenly thought of something and asked Heller, "Oh, right, Heller—could we build a castle on the mountaintop? Could we use Castle of Black Iron's spatial and terrain transformation ability to grow a castle or palace here?" "That would be great!" Zhang Tie became delighted. "Don't you think the summit is getting more and more crowded now? If a few more people come, there won't be enough room for everyone to live up there!"
The few buildings on the mountaintop were still the prefabricated houses Zhang Tie had left behind in