My Refuge in the Apocalypse

An epic disaster-level virus has caused mankind to lose its home. Countries that escaped the first wave of the virus have opened shelters and built shelters in the hope of preserving the last fire of mankind. But Ming Kecheng, who was supposed to die in the disaster, unexpectedly returned to his student days. Given another chance, Ming Kecheng must protect his lover, friends, family, and unsystematic literature.