They didn't know what was happening outside?

Well, they must have known how things were at the beginning. But after being forced to flee in here, and with their phones dead, they'd completely lost contact with the outside world.

Ray thought for a moment, then said, "Social order has already collapsed. In this extreme cold, most people can't even step outside. They can only sit in their homes, burning through whatever supplies they have left, waiting to die."

Several people's mouths fell open