Su Yao caught her breath in the safe house, but the threat of the high temperature had not diminished at all. She closely monitored the external environment through the system and discovered that a mysterious energy fluctuation was rapidly spreading from the depths of the distant desert.

"This energy fluctuation is very unusual and may bring us even greater trouble," Su Yao said to her parents, frowning.

She decided to take the initiative and venture into the desert to find out what was going on. Before setting off, Su Yao carefully selected some equipment suitable for desert combat from her spatial storage, such as a protective cloak that could withstand sandstorms and high temperatures, a superpowered skateboard that allowed her to move quickly across the sand, and special potions that could replenish her physical strength and superpowers.

Stepping into the desert, Su Yao truly felt the cruelty of nature. The howling wind, carrying scorching sand, cut across her face like knives. The blazing sun baked the entire desert like a giant furnace, each step feeling as if it would melt the soles of her shoes.

Guided by the system, Su Yao sped towards the source of the energy fluctuations. Along the way, she was attacked by a group of sand bandits. These bandits, driven by the extreme heat of the post-apocalyptic world, had become ruthless in their struggle for survival. Riding mutated sand beasts and wielding various homemade weapons, they charged towards Su Yao.

Su Yao's eyes turned cold, and her superpowered skateboard accelerated, propelling her into the sand bandit horde like lightning. A superpowered whip appeared in her hand, its tip crackling with electricity. With a flick of the whip, she sent several of the leading sand bandits flying. Seeing this, the sand bandits swarmed around her, attempting to trap Su Yao.

Su Yao remained calm. She concentrated her supernatural power in her feet, leaped into the air, and unleashed a powerful vortex. The vortex whipped up a cloud of yellow sand, engulfing the sand bandits, who struggled and screamed in agony within. Taking advantage of the chaos, Su Yao freed herself and continued towards her destination.

Finally, she arrived at the source of the energy fluctuations. There stood a massive ancient pyramid in the center of the desert, surrounded by a strange energy shield, on which various mysterious runes shimmered.

Su Yao attempted to approach the pyramid but was blocked by its shield. She activated her system to analyze the shield and discovered that it required a specific energy source to break through. After some searching, Su Yao found an energy crystal emitting a blue light in a nearby ancient ruin.

As she approached the pyramid shield with the energy crystal, the shield suddenly emitted a strong suction force, pulling Su Yao and the crystal in together.

The interior of the pyramid was dark and damp, filled with an ancient and mysterious atmosphere. Su Yao walked forward cautiously when suddenly, torches on the walls lit up automatically, illuminating the path ahead. At the end of the path, a huge stone gate appeared.

Su Yao pushed the stone door open, revealing a room filled with various treasure chests and mysterious instruments. In the center of the room stood a massive energy core, the very core emanating the energy that caused the desert's energy fluctuations.

However, just as Su Yao approached the energy core, a low roar echoed through the room. A gigantic mummy monster slowly emerged from the corner, its body wrapped in bandages, its eyes flashing with an eerie red light.

The mummy monster swung its enormous arms and lunged at Su Yao. Su Yao dodged to the side, then unleashed her supernatural attack. Her power struck the mummy monster, but only kicked up a cloud of dust.

Su Yao realized that the monster's defenses were extremely strong, and she had to find its weakness. While dodging the monster's attacks, she activated her system's scan. Finally, she discovered that the mummy monster's head was its weak point.

Su Yao concentrated her supernatural power, condensing it into a lightsaber. Seizing the opportunity, she leaped high into the air and thrust the sword towards the mummy monster's head. The monster let out a deafening roar, and its body slowly collapsed.

Su Yao walked to the energy core and used the system to adjust and seal it, successfully preventing the energy fluctuations from spreading. Inside the pyramid, she also found many precious resources and treasures, which she stored in her spatial storage before returning to the safe house.

This adventure further enhanced Su Yao's strength and provided greater protection for the safe house. However, she knew that the dangers of the high-temperature apocalypse were endless, and she must remain vigilant at all times, constantly exploring and fighting to protect herself and her family's lives.