Building a Doomsday Base: Starting with a Transmigration to the Red Sea

【Infinite Worlds + Apocalyptic Instances + Modern Espionage + Steel Torrent + Severe Firepower-Inadequacy Anxiety】The unlucky sailor Gao Da had to toil on long-haul voyages to repay his father's debts. While passing through the Gulf of Aden, he was thrown overboard by the vortex of the legendary “Star Gate.” A local had just rescued him when he was caught up in a war and had a gun pointed at his head. But the “Star Gate” didn't send him to another world. Instead, it attached another world to him. A portable base built to deal with apocalyptic crises. “Is that… a .50-caliber heavy machine gun? A 40-millimeter high-velocity grenade launcher?” “…A 25-millimeter chain gun!?” “And this is just what the most basic infantry weapons factory produces?” “Hmph! Which bastard pointed a gun at me?” “I'll be generous and let him experience what it's like to have a chain gun pointed in his face!”