The Junk I Drew Is Actually High Tech?

In an imagined future where interstellar civilization has reached its peak, humanity faces the threat of the mechanical insectoid race. Gu Xiao transmigrates to this world and activates the Synthesis System. Anything he draws by hand can be turned into a real object by using the System to synthesize it with energy. The problem is that Gu Xiao is an absolutely terrible artist. His circles look like potatoes, and his battleships look like bricks.

And so, the artistic style of the entire galaxy begins to go off the rails:

The empire’s strongest commander stares pensively at Gu Xiao’s drawing of a “fuzzy pipe,” until the thing fires a death ray capable of annihilating stars;

Elite soldiers from a rival civilization are beaten senseless by mechs made of “stick figures” with round eyes, and even as they die, they complain that the enemy’s models are so carelessly made.

Wiping sweat from his brow, Gu Xiao protests, “It’s called minimalism, the essence of the soul-painting style!”

The story follows Gu Xiao, a down-and-out street artist dragged into an interstellar war. Armed with all kinds of illogical yet astonishingly powerful “doodle-based black technology,” he gradually uncovers the ultimate secrets of the universe, eventually becoming the savior of the galaxy, and its biggest troublemaker.