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A black cat that is fat as a ball, a black cat that is responsible for the great rejuvenation of the cat clan, a black cat that dreams of being the protagonist, what kind of abyss will it go to under the leadership of the black system... Cat: Author, hundreds of chapters have passed, why am I still in such a small shape, why am I so fat? Author: Come on, come on, I give you the pen, you write.

Start with a machine, and all its equipment must be decomposed and synthesized. An APP called Sandbox Creation appeared on his mobile phone, and from then on Xu Hang had the ability to travel through different worlds. In this sandbox world, he needs to rely on wisdom to survive, use black technology to compete with prehistoric dinosaurs for territory, and obtain resources from local indigenous people...