I, the Heavy Mechanic, the Bounty Head Nightmare

Zhang Fan traveled to a world similar to heavy-duty mechas. At this time, mechanics became the most powerful and highest-status profession. Zhang Fan started the mechanical transformation system. Not only can it be transformed into more powerful machines, but it can also obtain blueprints that surpass current technology. 820 Vulcan Cannon - changed to a nuclear explosion! Storm——Type IV is devastating, the king of naval battles! Crimson Peony's most powerful machine gun and secondary battery can't penetrate any armor! Are you saying that tanks in this world don't even have room to install special weapons? Then I can remodel it multiple times. In order to obtain rare materials and improve his strength, Zhang Fan began to hunt for bounty heads everywhere! In the wailing of the bounty head, the secrets of this world slowly emerge! The introduction is weak, please read the text! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.