The world of shelter under the glacier

The giant asteroid is coming...
Fires, earthquakes, tsunamis, radiation, etc. will sweep across the world, and then ice and snow will cover the world. The continents and oceans will be completely frozen. Humanity has since entered a long ice age...
When the Ice Age comes, the world will enter the era of underground shelters - private shelters, village-level shelters, town-level shelters, county-level shelters, municipal-level shelters, provincial-level shelters, and super (national) shelters. One after another, the shelter economy officially kicked off.
At this critical moment, Ye Xingchen (Chu Feng) traveled through time and activated the shelter system.
Under the apocalypse, the heroes competed, accompanied by a roar, "Do princes, generals, Xiang Ning have the guts?"
Who can have the last laugh? Dear readers, please listen to me...