I Will Be a Boy Who Spreads Wealth in the Last Days

(Doomsday + Rebirth + System + Stocking up on supplies + Mission orientation) The end of the world is coming, and there will be natural and man-made disasters. Survival of the fittest, the weak and the strong; natural selection, survival of the fittest. Zhang Xiao was hiding in Tibet in the last days. After struggling for five years and about to usher in the dawn of victory, he was brutally murdered by his companions. Reborn with the system and returned to the seven days before the end of the world, started to stock up crazily, built a secret base, and prepared to take my parents back to the mountains and forests... But after all calculations, I didn't expect that it was bound to the mission system, which not only provided strength but also "blood".