Soon, the mutated zombie army was wiped out with lightning speed. Wu Xiaohu slumped to the ground, gasping for breath, his chest heaving violently as if he were sucking all the air into his lungs. The mech's chest opened, and a powerful suction vortex appeared. Countless mutant beads soared into the air, transforming into streams of light and flying towards him, which he absorbed.
He handed two mutant beads of the mutant zombie king to Niu Niu, "Little sister, absorb them and restore your strength. You consumed too much energy in the battle just now." There was concern and a hint of fatigue in his voice, and beads of sweat on his forehead slid down his cheeks.
"No, brother, I have some here! You should get better soon." Niuniu refused directly, taking out several mutant beads of the same size and handing them to Yu Kai. Her eyes were filled with stubbornness and concern for Yu Kai, her hair wet with sweat and sticking to her cheeks.
"Put it away! Don't take risks like this next time. You've got me worried sick. Let's go back first!" Yu Kai declined, pushing the mutation bead back. His tone held both the authority of a brother and deep concern.
"Brother, I prepared this for you, please accept it!" Niu Niu pushed it forward again, her eyes were firm and persistent, her hands were tightly holding the mutant bead, and the wound on her arm was still bleeding.
Yu Kai looked at Niuniu, whose eyes were determined, and nodded. "Let's go back first. Please help me put it away!" His eyes were full of helplessness and touching. Then he looked at Wu Xiaohu, who was recovering, and said, "Brother Xiaohu, let's go back first. It's not safe here!"
"Alright, young master!" Wu Xiaohu grabbed his sword and stood up. His face still wore the fatigue of the battle, but his eyes were full of determination. He and Niuniu turned into a stream of light and flew towards the Nantianmen construction base.
Along the way, the wind whistled in their ears, yet their hearts remained restless for a long time. This fierce battle made them more aware of the importance of each other and strengthened their determination to protect each other. Yu Kai gazed at the ruins of the destroyed city in the distance and secretly vowed to restore the vitality of the Earth Star.
They soon returned to the base. Academician Chao was waiting there early. As soon as he saw them, he immediately walked over and asked with concern: "Xiaokai, Niuniu, Xiaohu, are you all okay?" His worry was beyond words, and his eyes were full of anxiety.
"It's okay! Elder Chao, we're all fine!" Yu Kai immediately retreated from the mecha. His face was rosy, and his whole body was shrouded in a faint light. "On the way back, I was refining and absorbing the mutation beads. I've recovered a lot now!"
"Okay, that's good, that's good!" Seeing that they were all fine, Elder Chao finally felt relieved. "Let's go back to the military hospital and get a thorough checkup!"
"Okay, I'm so tired! Ask the cafeteria to at least give me an egg!" Wu Xiaohu touched his round belly and chuckled, with a simple smile on his face.
"Okay, Xiaohu, you've worked hard. I'll go talk to them and they'll definitely give me this face." Old Chao laughed.
"Hehe! Thank you, Mr. Chao, thank you, Mr. Chao!" Wu Xiaohu immediately bent down to express his gratitude.
"Is Earth so short of supplies now? I'll go to the Genetic Research Institute later to see if there's anything I can do to help. We must develop a vaccine to control mutations as soon as possible. Earth can't go on like this!" Yu Kai said solemnly. Even the core base of Dragon Country is so short of supplies. How difficult must life be for ordinary people? He clenched his fists unconsciously.
"Alas!" Elder Chao sighed. "Their conditions are even more difficult. Earth originally had a population of 8 billion, but now it's less than 1 billion. We can only hide in underground bunkers, and the resources we can obtain are really limited!"
"Don't worry, Mr. Chao, we will definitely be able to develop a vaccine that can control mutations. I have learned a lot of knowledge in the underworld this time. This knowledge will be of great help in developing vaccines. We will definitely succeed!" Yu Kai said firmly, his eyes full of hope.
"Okay, I thank you on behalf of Longguo and the entire Earth! Thank you, Xiaokai!" Mr. Chao held Yu Kai's hand, bent down and said, and other scientific researchers also bowed.
"Mr. Chao, don't be like this. I should have contributed to these things." Yu Kai immediately helped him up.
After returning to the military hospital and washing up, Yu Kai tried his best to recover. As he refined and absorbed the dozen or so mutant beads of the mutant zombie kings, his strength finally recovered a lot. He also found that it was difficult for him to recover.
Without giving it too much thought, he took Niuniu and Xiaohu to find Mr. Chao and followed them to the relocated Gene Research Institute. In the glass corridor outside the R&D room, they saw researchers working on samples of red spider lilies, performing various tests and recording data. Another was concocting a mixture of different ingredients, placing it into a special syringe, and then injecting it into a mutant mouse.
The violent mutant rat shrank in an instant and kept howling in the cage. At this time, it no longer had super powers, but it was still extremely violent. It kept gnawing at the iron cage with its teeth, and the collision of its teeth with the iron cage splashed sparks.
"Failed again!" The researcher made a note and returned to his work to continue mixing the solution. Yu Kai and his colleagues watched from outside through the glass, not bothering him. Yu Kai, too, was carefully examining the solution he was using, mentally analyzing the reasons for the failure without blinking.
After some adjustments, the researchers asked the tester nearby to inject the gun again, while he carefully observed and took detailed notes. But it still ended in failure.
The researchers thought calmly for a moment, then discussed the issue with other researchers. Someone brought them a simple lunch, which they quickly devoured. They then began trying again, but all failed without exception.
Elder Chao watched Yu Kai deep in thought and didn't bother him. Someone nearby pushed a chair over to Elder Chao and Academician Fang, motioning them to sit down and wait. They had been standing for so long, and he was worried about their health.
Yu Kai looked at Niuniu and said in a deep voice, "Little sister, what's going on? Do you understand? There shouldn't be any problem with their preparation, so why is this happening?"
Niu Niu hesitated to speak, shook her head and bit her lip.
"It's okay, I'll think about it!" Then he looked at Elder Chao and the others, "I'm sorry, Elder Chao, I kept you waiting for so long. You guys go and do your work first. I'll think about it here and figure out what I've overlooked!"
"Xiao Kai, you have just recovered and you need to have a good rest! Don't be in a hurry, let's go eat first! Come back and see you after dinner!" Old Chao stood up and said.
"Yes! Young Master, it's past dinner time. Let's eat first. Even if you are not hungry, Mr. Chao and the others will not get too hungry!" Wu Xiaohu touched his round belly and walked forward and said.
"Brother Xiaohu, go with Elder Chao and the others to eat. I can use my spiritual power to replenish my depleted energy. It won't have any effect even if I don't eat anything!" He then looked at Elder Chao and said, "Elder Chao, go ahead. I'll think about it. I'm fine."
Mr. Chao knew that Yu Kai was not an ordinary person, so he did not force him. He called Niu Niu to go along, but Niu Niu shook her head, so he had to give up.
"Niuniu, don't you want to eat either?" Yu Kai looked at Niuniu and asked with concern.
"I'm not hungry!" Niuniu shook her head and said, "Brother, do you really have to figure it out?"
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