Apocalypse: I Built the Infinite Train - Chapter 221: Swallowing Missiles

... only a narrow opening barely big enough for a person to squeeze through.

Without hesitation, he walked up, placed his hand on the control panel, and activated Mechanical Heart. A surge of electricity pulsed through the circuits, and the automatic door emitted a strained mechanical whine before forcefully sliding halfway open. Lin Xian quickly slipped inside.

Click—

He adjusted the beam of his flashlight, illuminating the pitch-black engine bay. Right in the center stood ...