As a scientific researcher, why should I save the world?

Inside the cave, the ancient stone platform exuded a mysterious light, and the ice sword lay quietly on it, with red and blue interweaving light flowing through the sword body, as if it contained two completely different powers. Mark and Carl stood beside the stone platform, their eyes focused on this magical weapon.

Carl reached out and gently touched the blade of the ice sword, feeling the warmth and coldness coming from the sword body. "This power..." He pondered, his eyes flashing with curiosity and awe of unknown power, "The fusion of ice and fire, this is also extremely rare in history."

Mark held the ice sword tightly, he could feel the power contained in the sword body leaping, as if it had life. He waved the ice sword, and the tip of the sword cut through the air, bringing a red and blue interweaving light, illuminating a corner of the cave. "This power..." He muttered to himself, with a glimmer of excitement in his eyes, "I feel I can control it."

Carl nodded, his eyes wandered around the cave, and finally fixed on the mural. "We need to know more about this power." He walked to the mural and carefully observed the ancient symbols and patterns. "These murals record not only the method of strengthening the ice sword, but also the control of the power attribute." Mark also walked to the mural, his eyes swept across the mural, trying to interpret the complex symbols. "These symbols..." He pointed to a symbol similar to a flame, "This symbol represents the power of the fire attribute, and this..." He pointed to a symbol similar to an ice flower, "This represents the power of the ice attribute." Carl walked to Mark's side, his eyes swept across the mural, and finally fixed on a special symbol. This symbol is composed of flames and ice flowers interwoven, emitting a strange light. "This symbol..." He pondered, "It represents the fusion of power, perhaps we can use this symbol to further strengthen the ice sword." Mark nodded, he walked to the stone platform and placed the ice sword on the stone platform. Then, he took a deep breath, closed his eyes, and slowly injected the energy in his body into the ice sword. The ice sword began to glow, and the red and blue lights in the sword body intertwined to form a new light, which was neither as hot as flames nor as cold as ice, but a gentle and powerful force.

Carl also walked to the stone platform, and pressed his hands on the stone platform, guiding the energy in the cave to flow to the ice sword. The symbols on the stone platform began to glow, and the light of the ice sword was reflected, forming a strange scene.

With the continuous injection of energy, the light of the ice sword became stronger and stronger, and the red and blue lights in the sword body began to merge, forming a new color-purple. The purple light flowed on the sword body, and finally formed a series of purple lines, which intertwined with the original red and blue lines to form a new pattern.

Finally, the light was restrained, and the ice sword landed steadily on the stone platform. The light of the sword body also became soft and restrained, and the purple lines were quietly attached to the sword body, as if integrated with the sword body.

Carl retracted his hands and breathed a sigh of relief. His face was slightly pale, but his eyes were full of excitement. "It's done!" He said with a hint of relief, "The ice sword has been completely strengthened."

Mark walked forward and carefully picked up the ice sword. The sword was cold, but it didn't feel the biting cold before. Instead, it felt warm. He waved it a few times, and the ice sword passed through the air, bringing a whistling sound. It was lighter and sharper than before.

"How does it feel?" Carl asked, his eyes fixed on the ice sword in Mark's hand.

A glimmer of excitement flashed in Mark's eyes, "It feels great! The power and control have improved a lot." He shook his wrist, and a half-moon-shaped ice blade flew out from the tip of the sword, with a purple light. With a "bang", a bowl-sized pit was blown out on the cave wall, and broken ice splashed everywhere.

Carl walked to the pit that was blown out, carefully observing the edge and depth of the pit, and gently stroking the ice wall around the pit with his fingers, feeling the residual energy fluctuations. "The power has indeed increased a lot." He said with a hint of appreciation, "It seems that this strengthening ritual is very effective." He turned and looked at the murals deep in the cave, "Let's take a look at the murals again, maybe we can find more information about the ice sword."

Carl walked to the murals and carefully observed the symbols and patterns on the murals. The firelight reflected on his face, outlining his focused expression. His fingers gently slid across the surface of the murals, as if touching the traces of history and feeling the ancient wisdom.

Mark also walked over and stood beside Carl to study the murals together. He noticed that in addition to the symbols and patterns he had seen before, there were some new symbols on the murals, which he had never seen before.

"Carl, look at these symbols, I don't think I have seen them before." Mark pointed to the new symbols with a hint of doubt in his tone.

Carl looked in the direction of Mark's finger, and his brows frowned slightly. "These symbols... seem to represent some kind of energy attribute." He pondered for a moment, "According to the description on the murals, the ice sword can absorb energy of different attributes to enhance its own power."

"Absorb energy of different attributes?" Mark repeated Carl's words, and a glimmer of excitement flashed in his eyes. "So, the power of the ice sword can be further improved?"

Carl nodded. "In theory, it is, but we need to find ores or other substances that contain different energy properties." He looked around, his eyes sweeping across every corner of the cave, "Maybe we can find some clues in this cave."

Mark also began to search in the cave, his eyes sweeping over the rocks and ice, hoping to find some special ores. The light in the cave was dim, and the ground was covered with thick snow, making it very difficult to search.

Carl walked to a corner of the cave, where there was a pile of scattered rocks. He picked up a rock and observed it carefully. The surface of the rock was rough and uneven, with no obvious features. He put the rock down and picked up another one.

Suddenly, a glimmer of light flashed in Carl's eyes. He picked up a red rock. The surface of the rock was as smooth as jade, emitting a faint fiery red light. He brought the rock close to the fire and observed it carefully. "Mark, come and take a look at this."

Mark heard Carl's call and walked over quickly. He took the rock from Carl's hand and observed it carefully. The rock was warm to the touch and exuded a faint smell of sulfur. "This... is this an ore containing fire energy?"

Carl nodded. "It's very likely. The fire ore recorded on the mural has this color and smell." He pointed to a flame symbol on the mural, "Look, this symbol is very similar to the color of this rock."

"Then let's give it a try!" Mark said excitedly. He walked to the stone platform and placed the red ore next to the ice sword. Then, he took a deep breath, closed his eyes, and slowly injected the energy in his body into the ore.

The red ore began to glow, and the color gradually deepened, eventually turning into a dazzling fiery red. The ore began to melt and turned into a ball of fiery red liquid, slowly flowing on the blade of the ice sword. The liquid gradually cooled and solidified, and finally formed a thin layer of red coating, covering the blue coating.

Mark opened his eyes, picked up the ice sword, and looked at it carefully. The red coating on the blade exuded a faint fire light, making the ice sword look more majestic. He waved the ice sword a few times, and a wave of heat came over him, making him feel hot.

"How does it feel?" Carl asked, his eyes fixed on the ice sword in Mark's hand.

Mark's eyes flashed with excitement, "The power is stronger than before, and it also has a burning feeling." He shook his wrist, and an ice blade wrapped in flames flew out from the tip of the sword. With a "bang", a larger pit was blown out on the cave wall, melting the surrounding ice.

Carl walked to the pit that was blown out, carefully observing the edge and depth of the pit, and gently stroking the ice wall around the pit with his fingers, feeling the residual energy fluctuations. "The power has indeed increased a lot." There was a hint of appreciation in his tone, "It seems that this fire attribute ore is very effective."

Mark held the ice sword, and he could feel the power contained in the sword body leaping, as if it would burst out at any time. He took a deep breath and tried to calm his excitement. "What should we do next?" He looked at Carl with a hint of expectation in his eyes.

Carl walked to the entrance of the cave, and his eyes looked through the cave to the ice field outside. "We need to find more ores to further enhance the power of the ice sword." He pondered for a moment, "At the same time, we also need to be careful of the people from the Rebirth Organization, they may find this place at any time."

Mark nodded, he knew Carl was right. They must improve their strength as soon as possible in order to fight against the Rebirth Organization. He held the ice sword tightly, and a firm light flashed in his eyes. "Then let's get started."

Carl and Mark began to search in the cave, hoping to find more ores to further enhance the power of the ice sword. The light in the cave was dim, and the ground was covered with thick snow, making it very difficult to search. But they did not give up, they knew that only by constantly improving their strength could they win in this battle for survival.

Time passed by minute by minute, and Carl and Mark searched carefully in the cave. They found some special ores, which contained energy of different properties, which could further enhance the power of the ice sword. Whenever they found a new ore, they would excitedly try to fuse it into the ice sword. Every time they fuse, the power of the ice sword will be improved.

In the cave, the fire flickered, and the figures of Mark and Carl cast long shadows on the ice wall. They forgot about time and hunger. They had only one goal in mind, which was to increase the power of the ice sword and prepare for the upcoming battle.

Finally, when all the ores in the cave were found by them, the power of the ice sword reached a new height. Mark wielded the ice sword, and the sword body emitted a dazzling light. The red and blue light flowed on the blade, as if it contained endless power.