Surviving the Extreme Cold: Starting from Signing in to an S-Level Shelter

All 9 billion people in the world suddenly traveled to the Infinite Continent, and each person had a survival diary. The temperature dropped to minus 30 degrees Celsius on the first day, and everyone had to find all life-saving supplies at all costs. Xu Tian, ​​who was originally a homebody, suddenly got a sign-in system. On the first day, Xu Tian signed into an S-class survival base The next day, I signed in for an SS-level backpack. The third day... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.