Lord of the Forbidden Zone

Xiao Hei glanced across the snow-capped mountains, closed his eyes, and lost his breath. It was old, its teeth were falling out, and its hair was matted. It reached the end of its life, and it is already a miracle that it has survived until now. Its only regret is that it did not die on the battlefield with its master, but it doesn't matter, there is nothing wrong with dying in the snowy mountains. This is the place where he and his master met. At the end of his life, he vaguely remembered the long-lost sentence, "Where did this native dog come from?" The huge body shrank into a palm-sized puppy, floating towards the deserted city at the foot of the ice peak, and landed in a dilapidated kennel. After a while, a puppy barked. At the same time, a embarrassed figure in school uniform, with a little perseverance, followed the sound of the dog barking, climbed to the city gate, and fainted. A new adventure begins again. (Zhuanxuan + no system + group penetration)