I Foresaw the Heat Turning to Extreme Cold, Then Watched My Wicked Family Freeze to Death

[Post-apocalyptic zombies + rebirth + punishing scumbags + ungrateful wolves + max-level powerhouse] In her previous life, a heatwave apocalypse descended. When Jiang Ning tried to stop her father, stepmother, and younger sister from using their supplies to profit from the disaster, the three of them brutally murdered her. Unexpectedly, all four members of the family were reborn five days before the apocalypse. Jiang Ning awakened the 'Infinite Upgrade System' ahead of time and learned that the coming disaster would be a deep freeze. This time, she chose not to warn them in advance. Instead, she took everything valuable the family owned to stock up on supplies and build a shelter. To her surprise, the System turned her spatial storage into a massive supermarket that would never run out of goods, and it could keep upgrading, too. Zombies? She'd recruit them as cashiers! An S-rank anomaly? Fine, fine, come in for an interview as a security guard? Just as Jiang Ning was thriving, a faceless video of her spread across the only network available and shot to the top of the trending list! Everyone begged to get in her good graces, including her family, though they had no idea the powerhouse was the very Jiang Ning they'd looked down on! And that wasn't all. Her younger sister wanted to curry favor with her so badly that she planned to push their burden of a father and mother out to feed the zombies? Her mother even mistook her for a man. Sending her intimate photos wasn't enough: she also wanted to drug her younger sister and send her over! Her father was just as ruthless. He offered to hand over his wife and younger daughter, and even all their supplies, just to become one of Jiang Ning's underlings! Faced with this pack of heartless, treacherous family members, Jiang Ning took their supplies and shared a gorgeous selfie of herself, not caring whether it made them furious enough to die. In this life, she'd sooner save a walking stick than save any of them! Wait!!! Since when did nobody tell her that the walking stick's owner was so clingy, like a piece of dog-skin plaster?