Countdown to Natural Disaster: Start by Building a Safe House

[Hardcore natural disaster + safe house infrastructure + no zombies + AI companion + survival maniac] With 180 days left until the end, Moloy is reborn with a complete timeline of the disaster. There is no portable space, no supernatural magic, only the ultimate survival rationality. He rented a residential building at a low price and renovated the Doomsday Fortress with his own hands! Living reserves on the fourth floor, buffer defense on the fifth floor, and rooftop energy farm. Explosion-proof doors and windows, solar arrays, rainwater collection and closed-loop water circulation systems are all in one step. On the 12th day of the countdown, the mysterious capsule fell, and the liquid robot "Leviathan" arrived in the form of a silver-haired girl. She is responsible for precise calculations, while he insists on hard-core hands-on work and focuses on absolute self-sufficiency. When heavy rains flood the city, 50°C extreme heat scorches the earth, and -40°C extreme cold freezes everything... The outside world was wailing in despair, but Moloy was in the fortress with closed curtains, eating vegetables grown without soil, and the years were quiet. However, when the last known day in memory passes... The real end seems to have just begun.