The dust thrown into the atmosphere by the impact obscured the sky and plunged the world into an Ice Age that would last for hundreds of years without sunlight.

Because of the lack of sunlight, Earth's surface had fallen to extreme cold temperatures down to tens of degrees below zero. 

Facing impending doom, Chen Xin was left with a shelter that he built underground and an upgrade system he found. How would he survive the crisis?

Could human civilization prevail? Would the embers of hope be enough to illuminate the cold night and bring warmth to mankind?

Destiny had brought forward a harsh trial. Could human beings avoid sharing the same fate as those of the dinosaurs that were extinct?


"Upgrade Option 1: Replace the circulating medium, improve the heat exchange efficiency of the equipment medium, survival points needed for upgrade: 300"


"Upgrade Option 2: Replace the circulating medium, enhance the circulating efficiency of the equipment medium, survival points needed for upgrade: 500"


The ground source heat pump equipment assembled by Chen Xin was still an ugly thing, but compared to the clutter of items created for the initial oxygen machine, this ground source heat pump at least looked like something decent, not overly crude or shoddy.


Seeing the upgrade options displayed by the system, Chen Xin merely raised an eyebrow and clicked to confirm the upgrades, applying both upgrade options to the ground source heat pump.


A flash of green light passed, and the entire ground source heat pump seemed rejuvenated, with changes in its size and structure.


Chapter 116 - Chapter 113: The Longing for Sweet and Sour Pork Ribs