I Can Upgrade Warships and Mechs

Stranded in the lower realm of Haolong, he accepts the mantle of Domain King to protect her world from invading alien races. But when word reaches him that his family faces annihilation in the upper realm, he unleashes a fleet of ten million warships in a heaven-shaking campaign that will rewrite the fate of both worlds. With the power to upgrade any vessel or mech to godlike strength, no force in the cosmos can stand against his relentless advance.