Seven Days to Kill: the Lone Wolf's Redemption

The bloody sky covers the earth, and the world will be killed in seven days. Shen Lang has the same nightmare every night - dying tragically in hundreds of ways in the last days. It wasn't until the moment the system was bound that he realized that it was a month's notice of death. Radiation distortion, corpse tide sweeping over, people's hearts broken... But he turned around and returned to the three-story rough house in the countryside. Use online loans to leverage millions of funds, invite a team of mysterious survival experts, and transform it into within ten days—— 5-meter-high concrete city wall, 50mm composite armored door, solar-diesel dual power supply, underground storage, mountaintop observation tower... A doomsday fortress comparable to a military fortress. This is the ultimate in hardcore apocalyptic survival. There are no invincible skills, no cultivation cheats, only planning, construction, upgrading, and—continuously becoming stronger before death comes.