Precisely, it was the demon baron being bound to a lot of machines.
At first glance, it was like a complex wheelchair, an operating table or a recreational facility in the playground. The demon baron's limbs were fixed on a movable metal support; something like snaffle was inserted into its mouth. As a result, the demon baron couldn't speak.
At the sight of Zhang Tie, although it couldn't speak, it widely opened its eyes like seeing a ghost.
Only after throwing a glance at the demon baron, Zhang Tie had known what it was thinking about.
The demon baron must have a lot of questions about this space of Castle of Black Iron, these people beside Zhang Tie and the marvelous palace tree. At this moment, it might wonder where it was, how long had passed and why it fell into the hands of strangers.