Outside the Palace Tree lay a large garden and broad, open lawns. Zhang Tie found an empty patch of ground and pointed. The Blood Sacrifice Furnace, stored within the spatial equipment of the Black Tortoise Secret Treasury that he carried inside the Blood Soul Temple, appeared on the lawn outside the Palace Tree. More than thirty meters tall, it was a statue with a human upper body and a serpentine lower body, its entire form resembling purple copper, its lower half coiled around an enormous furnace.
Spatial equipment could not be nested—one piece of spatial equipment could not contain another. That was common knowledge. Yet the Castle of Black Iron had no such restriction. Here, the spatial equipment Zhang Tie carried could freely enter and leave the Castle of Black Iron with him at any time.
From this perspective, Zhang Tie felt that the Castle of Black Iron was no longer merely spatial equipment, but an entirely unique space.
The statue, altar, and furnace—these three enormous objects were essentially one massive machine connected together. At least, that was how Zhang Tie saw them. By now, he had completely regarded the statue as a gigantic machine.
Within the temple ruins, Zhang Tie had thoroughly figured out how to use the Blood Sacrifice Furnace, as well as some of the special mechanisms hidden within it. When he left the temple ruins, he naturally took the statue with him.
At first, Zhang Tie had thought the Blood Sacrifice Furnace beneath the statue was like the Pool of Chaos, leaving nothing behind after incinerating the Devil Race beings offered in blood sacrifice. Only later, after thoroughly studying the furnace, did he discover a hidden compartment behind its base. Inside was a space measuring several dozen cubic meters, serving much the same purpose as a