Inside the safe house, Su Yao and her family began their arduous battle against the high temperatures. Su Yao took out the specially made insulation materials stored in the space, sealed and reinforced all the gaps in the doors and windows of the safe house, and installed multiple supernatural cooling devices inside to ensure that the indoor temperature was maintained within a range that was bearable for the human body.
Su Yao's parents actively engaged in training. Her father focused on training the coordination of strength and speed, swinging a barbell enhanced by his supernatural abilities. Each movement was accompanied by flashes of supernatural light, attempting to maintain agility even during bursts of power, in order to deal with the approaching zombies and mutated creatures. Her mother, on the other hand, practiced remote control of her healing abilities. She used energy threads condensed from her supernatural powers to precisely repair simulated wounds, constantly expanding the range and effectiveness of her healing.
With the help of the system, Su Yao delved into methods for advancing her superpowers in high-temperature environments. She discovered that by absorbing special particles from high-temperature energy, she could refine her own superpowers. Therefore, within the protective perimeter of the safe house, she carefully guided the high-temperature energy into her body, enduring immense pain as it was gradually transformed into nutrients for her superpowers. After several weeks of experimentation, she successfully upgraded her ice-type superpower, becoming able not only to create even colder icicles but also to transform them into ice mist, concealing her presence.
As time passed, the heat intensified. All external water sources dried up, leaving the land barren. Only heat-resistant mutated plants struggled to grow in the scorched earth, their branches and leaves becoming sharp as thorns, emanating a dangerous aura. Su Yao realized that she couldn't rely solely on the safe house's defenses; she needed to take the initiative, explore the surrounding environment, gather more useful resources, and learn about the zombies and mutated creatures.
Each time she ventured out, Su Yao wore protective gear, skillfully avoiding dangerous areas thanks to the system's detection capabilities. In a ruin, she discovered rare metals that remained even after being scorched by intense heat. These metals could be used to upgrade the safe house's defenses and create more powerful weapons. During one adventure, she encountered a swarm of heat-mutated rats. These rats were enormous, with teeth as sharp as knives, and moved with incredible agility. Su Yao calmly unleashed her powers; ice blades roared forth, instantly freezing most of the rats, then she used her fire powers to incinerate the remaining rats, successfully obtaining their internal crystal cores.
Back at the safe house, Su Yao distributed the crystal cores to her parents to help them upgrade their abilities. Her father's strength-type ability was enhanced, allowing him to briefly enter a berserk state where his power instantly doubled; her mother's healing ability also made a breakthrough, enabling her to release a group healing shield to protect her family from a fatal blow.
In the days leading up to the acid rain, Su Yao's family trained and prepared day and night. They built a superpowered combat vehicle equipped with powerful firepower and protective barriers, enabling rapid movement and handling of various dangers after the acid rain arrived. Su Yao also set up a superpowered sensor alarm network around the safe house, which would promptly sound an alarm if zombies or mutated creatures approached.
In the final days of the extreme heat, Su Yao's family was on high alert. They stockpiled a large amount of purified water and anti-radiation medication to prepare for potential pollution from acid rain. Standing in front of the safe house, Su Yao gazed at the world ravaged by the heat and silently vowed that no matter how cruel the world after the acid rain might be, she would use her system, spatial abilities, and special powers to protect her family and carve out a path to survival in this apocalypse.
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