My Machines Upgrade Without Limit, and I Unleash a Mechanical Catastrophe

The Abyss descends, monsters run rampant across Blue Star, and humanity enters an age of class advancement. Yang Xiao, a top mechanical engineer in his previous life, is reborn ten years in the past and faces class advancement all over again. He knows the strengths of the Mechanic class well: an unlimited supply of mechanical creations. Aerial carriers loaded with drones, magnetic-storm mechanical hounds roaming everywhere, and self-propelled artillery batteries make for a mechanical calamity. But the class falters in the late game. Its creations may be numerous, yet without a way to improve their quality, they struggle to threaten truly powerful opponents. Just as Yang Xiao is torn over what to do, he discovers a plus sign beside the panel for his mechanical creations. It seems he can assign upgrade points to them without limit...