The Apocalypse in America: I Can Craft Anything by Hand

Li Yuan has the [Everything Synthesis] System, and turns the apocalypse into his own world

[Kitchen knife + mop handle = makeshift spear]

[Makeshift spear + lighter = multifunctional spear]

[Multifunctional spear + flamethrower = flame-spewing lance]

In post-apocalyptic America, violence and death set the tone.

While everyone else flees for their lives, he builds a Gundam. While they struggle to survive, he builds a city.

Then he throws a dinosaur fossil and an unknown crystal into the synthesis slot.

[Synthesizing...]

[Obtained: Undead Bone Dragon (Face your fear of death, mortal)]

Staring at the colossal beast before him, Li Yuan falls into thought:

What if I combine a zombie lord with a tank?

What if I combine an aircraft carrier with a base?

Building a land battleship by hand is perfectly reasonable, right!