After hearing Lu Yan ask about the 'mutant', Xu Te paused, he frowned slightly, his mood immediately fell, and he explained in a heavy tone:

"The increase in mutants in humans is around 2045, and that time period happens to be the year when the earth was hit by a devastating virus, and the human population on the earth plummeted from 8 billion to 3.5 billion in that year, so-"

At this time, when everyone listened to Xu Te's words, they found that Xu Te's voice was getting smaller and smaller, and his expression was getting heavier and heavier.

When Xu Te said this, he suddenly frowned, stopped, as if he was recalling a painful experience, pondered for a moment before he added:

"I was young and not strong-willed! Hey, it was a horrific massacre! In 2045, it was the most tragic months on Earth, and I... I, I watched the people around me, one by one, falling and dying, and it was a pain! At that time, almost every house was dead, and there were even corpses lying on the streets, and no one was going to clean up, because no one knew if they would survive that time, how many days would they live..."

Speaking of this, Xu Te lowered his head, he silently took off his glasses, wiped the corners of his cloudy eyes with the sleeve of his white coat, sighed, and then continued as if he was confessing:

"At that time, I was so young that I was scared to death, at that time, as a scientist, I was actually like ordinary people, I was so frightened by the 'virus' that I didn't dare to touch the 'virus'. If I had studied the 'virus' earlier, maybe we would have made a breakthrough in this field by now. ”

Lu Yan looked at Xu Te's remorseful expression, and his heart was sour, he could imagine the feeling of the period that Xu Te said - when a person is faced with the dead bodies killed by the 'virus' on the street, the fear in his heart can be imagined, everyone is afraid that they will try their best to avoid the 'virus' and avoid the corpses that were killed by the virus, those who want to survive are already considered to be people with strong consciousness, not to mention that some people still have the will to think about studying the 'virus'.

"Dr. Xu, don't be sad, wouldn't it be great that you survived? After Lu Yan sighed heavily, he comforted Xu Te, in fact, now Lu Yan feels that this old man is particularly worthy of respect, he can still look for his responsibility in such a painful experience, Lu Yan just wants to look at this old man with great reverence.

"Yes, it's good that I can survive, it's all caused by those aliens! So I must improve the technological level of our earthlings to fight against those aliens. Hutter wiped his eyes again, and then put on his black-rimmed glasses with the thick bottom of the bottle.

At this time, Xu Te was a warrior who had experienced pain in Lu Yan's eyes, stood up from the pain, and was ready to fight back, and his enemies, like Lu Yan, were all aliens.

"Aliens?"

After Lu Yan thought of this name, the hatred in his heart was also rising, but Lu Yan felt that his hatred this time was different from the previous hatred.

In the past, Lu Yan's hatred for aliens was mainly because they killed his good friend Wu Tao, whenever he thought of this, he gritted his teeth with hatred, but after hearing what Xu Te said, he knew that he should have hated it too much. It's small.

Yes, perhaps only people like Hüt, who experienced that tragic encounter and saw that tragic scene, will associate the hatred of aliens with the rise of the earth, and sublimate that 'great' hatred.

And people like Lu Yan's generation, they have been nearly 40 years away from that tragic history, and they know less and less about that period of history.

Moreover, in the past 40 years, the earth has also been under the rule of aliens, so if the earthlings want to remember that hatred, they can only pass on that history by word of mouth.

Under the rule of aliens, earthlings are not allowed to transmit, record, and recall that history during this time. It is not like now, if we want to remember the history of Japanese warlords' aggression against China, we can remember and reproduce it through movies, television, etc.

Therefore, people of their generation who are less than 20 years old like Lu Yan have not watched movies and TV about 2045, and the information they received from their fathers about the history of the generation is only how powerful aliens are and how they should 'protect themselves'.

However, after hearing Xu Te talk about that period of history today, Lu Yan suddenly felt that he should be able to do more.

Xu Te had turned around at this moment and was about to go back to the laboratory, and after he remembered that hatred, he remembered that he had to work, work hard, and use his own way to fulfill his dream of making the earth rise.

As soon as Lu Yan saw Xu Te turn around to leave, he remembered his purpose for entering the laboratory, and he hurriedly called Xu Te: "Dr. Xu, I have another question for you." ”

Xu Te took a look, and he also remembered that their previous topic was not over, so he turned back to his head again.

After taking a deep breath and stabilizing his emotions, Lu Yan knew that Dr. Xu's time was precious, and he didn't want Dr. Xu to recall those pains again, so he directly asked the question he wanted to know: "Dr. Xu, I don't know, what did you say?" Elementals, if added to our steel, will the weapons made into them make our weapons as sharp and hard as the 'alien war knives'?"

"Join '?' Elements will make weapons harder, that's a certainty, but, our technology is too far from alien technology, and if you want to get a weapon as hard as aliens, I'm afraid it's still a long way off. Hut paused at this point, then shook his head heavily.

"So, let's use '?' Will a weapon made of elements be harder than the fangs and claws of a mutated beast?" Lu Yan asked anxiously.

"This should be doable. Hütt nodded affirmatively.

"Great!" Lu Yan immediately opened his heart when he heard this, and he immediately said, "Dr. Xu, if you get the '?' on the mutant beast?" element, can you make me a knife? ”

When Xu Te heard this, he immediately understood what Lu Yan meant, Lu Yan and the mutant beast tore up, if there is a strong weapon, it will have a greater advantage, but after Xu Te thought about it, the wrinkles on his face became a ball, and he said with an embarrassed face:

"If you want to build a weapon, you can, but before we can make it, we need to add various concentrations to the metal?" Come and do the experiment, what does this need? The amount of elements is huge, can you provide it?"

Lu Yan also saw that this old guy was also suspected of taking advantage of the fire to rob, but after thinking about it, this old guy's starting point was still haode, so he still asked, "How many mutant beasts do you need?"

Hütt pondered for a while and said, "At least twenty mutated beasts?" element, it is sufficient. ”

"Hmm. ”

Lu Yan nodded, such an amount is a difficult number for ordinary people to complete, but for Lu Yan, in fact, he is afraid that he will complete it in three or five days.

"Oh, can you really do it?" Xu Te stared at Lu Yan in disbelief.

Lu Yan nodded affirmatively again.

"Haha, well, as long as you can get it, I'll help you make the knife you want as soon as possible. Hütt danced with joy and smiled like a child.

This made Lu Yan understand Xu Te's moody character.

Lu Yan really wanted to get the knife as soon as possible, so he remembered another question: "By the way, Dr. Xu, isn't it, these elements are only found on the teeth and claws of mutant beasts?"

"No, it can only be said that the mutant beast has the most teeth, claws, and bones, followed by the fur, and there will be a small amount in the flesh. Hütte explained.

"So that means that after getting the bones of the mutant beast, you actually got a large amount of the elements of the mutant beast, right?" Lu Yan asked again.

"So to speak. Xu nodded.

As soon as Luo Wei heard this, he immediately jumped out from the side and said happily: "Great! In this case, maybe we can help Dr. Xu get it in a day or two, and the elements they need are all over the forest with bones." ”

In the forest, the panic-making white bones are easy to remember.

"Oh, yes, yes. ”

Xu Te then understood what Lu Yan and the others meant, the corners of his eyes twitched, and then he smiled a little embarrassedly and said: "It's best that you can also bring a little bit of mutant beast meat, that meat also has the element in it, we scientific research workers work in this basement every day, we all have some leftover calcium, if we can let each of them replenish some elements, it will also make their bones harder and their bodies stronger." ”

"Yes, I said that the flesh of the mutant beast is so fragrant?" Lu Yan suddenly realized, he was very happy, this does not mean that he has also found a way to make his body stronger.

"yes, that elemental makes your skin and bones hard, so there's a lot to it by eating more mutant beast meat. Xu Te also drooled on the side.

"Haode, in the future, we will try to let you have mutated beast meat to eat every day. Lu Yan said magnificently, this is not a difficult thing for them.

"Hehe, how embarrassing is this!" Xu Te pinched it again, and then said with a slightly red face: "That is to say, in the future, I will come once every three days." ”

"Hmm. Lu Yan readily agreed.

......

This time I came to the laboratory to say that I gained a lot, not only it was possible to improve the level of my weapons, but also found a way to make my body stronger, all of which could double Lu Yan's combat strength.

Next, Dr. Xu kept his time, he went to do experiments again, Xiong Yuan took a few people to briefly visit this large laboratory, and then came back.

"Uncle Xiong, how did you know Dr. Xu?" Lu Yan asked Xiong Yuan curiously on the way back.

"Dr. Xu and my father are old friends, so we have known each other for a long time, and he first hid in our house to take refuge, and then our family was also affected, so I fled here with Dr. Hui. Xiong Yuan said slowly, as if he was telling a story from a long time ago.

"Refuge?" Dr. Xu wants to take refuge, who wants to embarrass him?" Lu Yan asked again puzzled.

Xiong Yuan looked at Lu Yan, his expression became heavy again, and said, "Actually, on the earth now, there is a group of people who live harder than us mutants. ”

"What do you mean ......" Lu Yan seemed to have guessed what Xiong Yuan meant.

In order to stop the scientific progress on the earth, the aliens have carried out an even more frantic search for these scientists, either killing or arresting, and now there are not many people on the earth who are engaged in scientific research. Xiong Yuan's face was gloomy after speaking.

"However, every year in our school, we hear that the 'Earth Alliance' will also organize some global 'Olympiad' mathematics competitions and other activities!" Lu Yan said this, and his heart was cold.