City: Start Building a Shelter!

Human civilization was destroyed by a biohazard. When the last light of civilization was wiped out by the zombie craze, Chen Ye was reborn three months ago and was bound to the biohazard system. Complete the dungeon missions issued by the system to receive generous rewards. In order to save human civilization, Chen Ye started building a shelter! In three months, he built a 100-meter-high wall. On the wall, he set up electronic rail guns and unlimited ammunition RPG rocket launchers. The 'Rod of God' hung high in the universe as my space-based weapon, and there were 500 million tons of nuclear bombs buried in the earth's crust as my dead hand system! This is the last line of defense for human civilization! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.