Apocalypse! I Cultivate Immortality with the System

[Apocalypse + One Female Lead + Overprotective Brother] The grim news of the apocalypse shattered a once-happy family. From then on, there was no school, no ice cream, and no one to rely on. All that remained were ferocious beasts, acid rain, and hunger. Their parents were killed by ferocious beasts while searching for supplies, leaving only the young Lin Yan and Lin Yue to struggle for survival at the bottom of a ruined world. Traditional technology has nearly ground to a halt, but an era of cultivation has emerged in its place. During a beast siege, Lin Yan awakens a Chaos Spiritual Root and a cultivation System while protecting Lin Yue. Others cultivate, and so does Lin Yan, but he doesn't meditate every day to absorb spiritual energy. Instead, he spends his days completing System missions to quickly earn rewards, increase his cultivation, and stockpile supplies. As the order of the apocalypse collapses and human evil is unleashed, what will people do? And can Lin Yan find a group of people who stay true to their original ideals and journey with him into a new era of the Immortal Path?