Star Abyss Shepherd

At the storm-ravaged corner of the Great Salt Flats, an old lonely fisherman, Old Hai, and his lame mongrel dog, Ah Huang, depend on each other for survival. By chance, Old Hai picks up from a pile of kelp a secret high-dimensional core not of this Earth—the 'Star Core Integrator'—and Ah Huang, upon touching it, undergoes a deep neural fusion with it. This attracts the ruthless pursuit of foreign predatory conglomerates, transnational mercenaries, and high-dimensional observers. Through life-and-death crises, Ah Huang displays super-dimensional gravitational powers, while Old Hai, with his thin, calloused hands, shields the dog tightly in his arms. For ultimate safety, they head toward the Earth's core furnace, and in the ultimate catastrophe spanning the Earth-Moon orbit, Ah Huang transforms his life into a gravitational giant claw that crushes the orbital cannon, completing the ultimate protection of the mortal world. The land remains unchanged, and mortal hearts endure forever; this old man and his dog, claws tightly clasped in the mud, carve out a warm sanctuary that even immortals cannot cross. — Description from novelcodex.org