I can upgrade the shelter Novel

A catastrophic impact has filled the atmosphere with dust, blocking out the sun and triggering an Ice Age lasting centuries. Earth's surface has become a frozen wasteland, with temperatures plummeting far below zero. Facing this existential crisis, Chen Xin possesses two crucial advantages: an underground shelter he constructed and a mysterious upgrade system he discovered. These tools become his only hope for survival in a world consumed by darkness and cold. As humanity struggles against extinction, critical questions emerge. Will Chen Xin's shelter and upgrade system enable him to endure this catastrophic period? Can human civilization itself survive this unprecedented crisis, or will hope prove insufficient against the relentless cold? Like the dinosaurs before them, will humans be driven to extinction, or can they overcome this harsh trial imposed by fate? The answers to these questions will determine whether mankind can find warmth and light in the endless night ahead.