I Build a Mech from the Start, Then Hand It Straight to the Nation!

(Technological Breakthroughs) + (Science Fiction) + (Mecha) + (No System) + (No Rebirth) + (No Transmigration) I posted my cutting-edge technology online, and the whole internet thinks I’m a special-effects genius. Building a fighter jet by hand? Building an aircraft carrier by hand? Then one night, the national authorities show up at my door: “Comrade, please stop putting on your special-effects show!”