I Can Build a Gundam by Hand

[Reborn + transmigrate + ridiculous inventions + high-tech otherworld + racial war] [Slow burn]

Liang Xiaoyue was unexpectedly reborn, only to find himself with a garbage start.

Other people are reborn with a System or superpowers. All he got was a pair of work gloves, and nine and a half of the ten fingers were torn through... But it's no big deal. With the hand speed he honed over twenty years of being single, building a Gundam by hand will only take a few minutes.

An ordinary man can wipe out the insectoid race with a wave of his hand and rule the sea of stars!