Sneak into the castle!

The bodies of the undead were formed by the condensation of death energy, and their abdomens were vortexes formed by death energy.
The death energy compressed to the extreme is like a sharp blade, making the entire vortex like a meat grinder.
They use suction to suck the human body into the abdomen, and obtain a large amount of dead air through strangulation, thereby strengthening themselves.
Such an ecosystem is simple and crude.
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Inside the castle.
The monitor on Gary's...