Start Surviving the Apocalypse by Rubbing the Mecha by Hand

In 2100, miniaturized and controllable nuclear fusion will be commercially available. In 2150, advanced bionic artificial intelligence was launched. In 2180, consciousness stealth technology reaches thousands of households. ... At the beginning of the third millennium, an unnamed mastermind couldn't bear to see humans addicted to the imaginary world. So, the deadly [Doomsday Survival] arrived. The chosen ones will be transported to the doomsday world of the heavens. 5 Days a week, 8 hours a day. If you die in it, your body will be thoughtfully returned to the real world. For a time, the entire society was panicked. But our protagonist Lin Song is not panic at all, not only because he is a striver from the 21st century, but also because his golden finger "explorer synthesis system" has arrived. ............................ Iron ore + wood = steel ingot Copper + plastic bottle = wire Aluminum + glass + water = small nuclear battery Steel ingot + wire + glass + chip + small nuclear battery = power armor High purity crystal + magnet + small nuclear battery + steel = lightsaber ............................ While others are struggling to survive with watermelon knives and water pipes. Lin Song, wearing power armor and holding a Jedi lightsaber, stood among the corpses and said proudly: "What I have achieved today is all due to my hard-working hands!" ............................ Starting world: Fallout