Sand table deduction.
Han Dong considered the scenarios where 'all enemy forces from Makoms City have arrived' and 'the enemy chooses to execute the original plan and directly attack London City'.
He envisioned how to deal with all possible events without affecting 'Beheading King Seal' and 'Zombie Creation'.
Eventually, he devised an executable 'unshell plan'.
The plan proposed splitting Hyperion Corporation into two parts—[Outer Shell] and [Core].
Outer Shell: The company's external structure, protective layers, and facilities essential for zombie and arms manufacturing and the imprisonment of Beheading King. The existence of the outer shell made the company appear to be functioning normally.
Core: The research and development departments involving core technologies, the Organic Research Institute, and the Secret Room imprisoning Beheading King.
