The End of the World Is Too Sudden

On April 1, 44444 AD, at 4:01 in the morning, the end of the world came. A serious zombie phenomenon broke out all over the world, and all countries, big and small, fell. Citizens please do not go out, close the doors and windows, stay at home with your family, and do not move around. Citizens outside please find a safe area to hide as soon as possible, do not make a sound, and wait quietly for military rescue! ! ! Blue Star's tens of billions of people received a smart positioning collar, a full-screen smartphone, a round smart watch, and a smart watch, all of which do not need to be charged. They are made of black and gold matte material, with a dark red biochemical logo printed on the back. No one knows how it came about, and top scientists from various countries cannot explain it, but at least it is harmless to humans. There is no heroine, no family, and the hero is an orphan. He never teams up with outsiders. He always works alone and acts independently.