"One..., two...!" Just as the officer was about to count to three, Niuniu vanished like a ghost, almost imperceptibly elusive. When she reappeared, she had already sent two soldiers flying with a thunderous force, and with unwavering murderous intent, she rushed towards the staff officer like a whirlwind. Her sharp nails, like lightning, pierced his neck, sending blood spurting out like a fountain, staining the area crimson.

"Bang, bang, bang!" Deafening gunfire erupted like thunder, and a barrage of bullets rained down on her and Yu Kai like a violent rainstorm. Yu Kai's sword danced with the wind, forming an impenetrable curtain of swords, intercepting the onslaught of these special bullets. His eyes widened, threatening to pop out of their sockets, and he roared as he charged forward. Each swing of his sword was accompanied by a surge of spiritual power, like a tidal wave, sending soldiers flying one after another, crashing into the surrounding walls with a dull, thunderous sound.

Niuniu, with her astonishing speed, dodged like a phantom. Every soldier who stood in her way was struck down with lightning speed. The two of them quickly rushed out of the conference room, but the troops outside were even more numerous and more heavily deployed. A barrage of bullets whizzed towards them. A genetic bullet struck Yu Kai's armor like a meteor, instantly degrading it. This startled Yu Kai; it had never happened before, and he knew instantly that he couldn't stay here any longer.

"Bang!" A genetic bullet whizzed over and hit Niu Niu like a deadly beast. The powerful force directly pierced her shoulder. Blood gushed out, instantly dyeing her clothes red. The bright red was shocking.

"Niuniu!" Yu Kai was horrified and immediately rushed towards her regardless of everything.

"Bang, bang, bang!" Genetic bullets shot towards him like meteors chasing the moon. His mecha quickly faded away. First, the mechanical sword in his hand disappeared, and then the mecha on his chest and back fell off piece by piece.

"Bang!" Two more genetic bullets mercilessly struck Niuniu. Her body trembled violently, as if struck by a heavy hammer, but she ignored her injuries and threw herself directly at Yu Kai. Yu Kai hugged her tightly and anxiously shouted, "Little sister, are you okay? Let's go!" Then he spread his mechanical wings and flew up with her in his arms.

"Bang, bang, bang!" He was shot in the back, the genetic bullet piercing his shoulder directly, leaving a trail of blood in the air. His mechanical wings were also pierced by the special bullets. He endured the piercing pain, his body swaying as he continued to fly forward.

"Brother!" Niu Niu looked at Yu Kai whose shoulder was bleeding profusely, tears streaming down her face.

"Don't worry! I'm fine. I won't die even if I'm cut into two pieces!" Yu Kai tried his best to push his spiritual power to the extreme, and his speed increased a bit, leaving a series of blurry afterimages in the air.

"Bang!" With a loud bang, a genetic rocket carrying a long flame came towards Yu Kai. The situation was urgent and Yu Kai dodged in a hurry.

Niu Niu broke free from his arms and flew backwards, "What are you doing? Niu Niu!" Yu Kai was shocked and anxious, and asked loudly in confusion.

"Brother, go quickly and come back to save me after you've recovered!" Without waiting for Yu Kai to react, she pushed him out at an extremely fast speed, like a flash of lightning.

"Bang!" A mutant rocket hit her directly, and the huge impact pushed her out again. She took the opportunity to push hard, and Yu Kai flew out like a cannonball.

"Little sister!" Yu Kai's mechanical wings disappeared, and he could only be carried out by this force to fly outward. His voice was hoarse and extremely angry.

"Brother, you go first!" Niuniu yelled at the top of her lungs, her petite body plummeting downwards at a rapid speed. Yu Kai stared at Niuniu's falling figure, his eyes etched with rage, his heart filled with endless pain.

With a loud bang, Niuniu fell heavily to the ground, raising a cloud of dust. Countless soldiers rushed forward like a tide, and an extremely sturdy iron cage was lifted by several people, and she was directly placed inside tightly.

Looking at all this on the ground, Yu Kai's tears flowed like a flood, "Little sister!" His voice was hoarse, and his bloodshot eyes were filled with anger at the moment.

Yu Kai's hands were clenched into fists, his nails digging deep into his palms. Blood dripped from his fingers, yet he seemed oblivious. The wind howled, lifting his messy hair, but it couldn't dispel the hatred and anger that burned within him like a physical substance.

He knew he had to leave immediately. Otherwise, not only would he fail to save Niuniu, but he would also be trapped. So, drawing on his remaining spiritual energy, he fled like a flash of lightning. As if aware of his thoughts, the pressing steel doors quietly opened for him, and he rushed out.

After he left, the massive steel gates slammed shut with a dull clang, like the slamming of hell's gates. The countless pursuing troops were stopped by this sudden closure, pounding on the gates in anger, but could only watch as Yu Kai retreated.

Yu Kai rushed out of the Nantianmen construction base and sped north, not daring to pause for even a moment. His clothes rustled in the wind, as if he were weeping. Sweat poured down his forehead like rain, blurring his vision. Just then, a tracking missile whistled rapidly toward him, its shimmering tail flames slicing a deadly arc across the sky like the Grim Reaper's scythe.

Yu Kai knew he was being locked onto the satellite radar, making it extremely difficult to escape. He gritted his teeth and mobilized the mysterious spiritual power within his body, forming a shield behind him that shone with a strange light, and spiritual power flowed through the shield.

"Boom!" The homing missile slammed directly into the shield, unleashing a resounding explosion. Flames instantly illuminated the entire sky, and a powerful shockwave spread outward. Yu Kai was flung forward by the force. A sweet sensation clung to his throat, and a mouthful of blood spurted out, dissolving into a bloody mist in the air. But he didn't dare pause, using the impact to accelerate his escape.

In the billowing smoke, Yu Kai's figure looked a little embarrassed, but his eyes were still firm, and he had only one thought in his mind: he must survive and rescue Niuniu!

His figure danced through the air like a falling leaf, finally plummeting into the sea with a massive splash. Instantly, huge waves surged, surging. Attracted by the movement, numerous mutated marine creatures swarmed over him.

These mutant creatures came in all shapes and sizes. Some were as massive as mountains, blocking out the sun; some were covered in sharp spines, like hedgehogs; and some shimmered with eerie, terrifying light. Their maws gaped, revealing sharp teeth, their eyes gleaming with greed and ferocity, as if they were eyeing Yu Kai as a delicious meal.

The moment Yu Kai fell into the water, he was surrounded by icy water. The excruciating pain from his wounds nearly made him faint. But his overwhelming desire to survive kept him awake. He gazed at the mutated creatures closing in on him, his heart sinking, knowing another fierce battle was about to begin.