Huang Ji went to bed at twelve o'clock and got up at nine o'clock the next day.

He just wants to sleep a little longer than others, because his mind is too tired......

In his sleep, he also had a dream.

In his dream, he seemed to see an elephant, trampling the farmland and eating the crops.

The local peasants, very dissatisfied, dug traps near the farmland and lured elephants into the pits and fell into the pits.

Eventually, apparently, the elephant was killed by the farmers.

And this is the last elephant in Yu Province, and after that, the Central Plains elephant became extinct.

Huang Ji woke up, played a set of internal scriptures, and practiced them all from the first group to the fourth group.

Then brush your teeth and wash your face, and go to the front room.

Seeing Lin Li sleeping on the carpet in the front hall, there was no need to ask him, Huang Ji also knew that he stayed up late last night and practiced until dawn before going to sleep.

There is not much progress, that is, it is just two more successes, but because of this late night, I lost twenty hours of life......

Huang Ji shook his head, didn't wake him up, and went out to buy breakfast by himself.

Coming back and sitting on the couch, drinking porridge and eating eggs, he continued to read.

"I actually dreamed of an elephant in the Central Plains, yes, it was the last historical record I saw before I went to bed. ”

In the past, there were many elephants in Yu Province, and it can even be said that elephants ran all over the ground......

Before Huang Ji went to sleep, he saw a document, which was recorded in the early years of the Northern Song Dynasty, a record of farmers hunting and killing elephants.

This...... It is also the last wild elephant in the history of Henan Province.

After more than a thousand years, there were no more wild elephants in the north.

"Why did the Central Plains elephant become extinct?" Huang Ji looked through the history books and couldn't help but want to deduce the answer to this question.

There is no doubt that humanity must have gone extinct, but Huang Ji wanted to deduce a more detailed historical process.

Once he succeeds, then the information of the past tense will be unlocked, and he will be able to go back to the past, see through the historical development process of all things, and work backwards from the past.

"Although the last elephant died in the early years of the Northern Song Dynasty, as early as the Han Dynasty, there were basically no wild elephants in the north. ”

"The famous Cao Chong called the elephant, and Sun Quan in the south also found the elephant from the land of Liangguang to pay tribute. Obviously, at that time, even if there were elephants in the north, they were already critically endangered, and they remained deep in the mountains and forests of Henan Province. ”

"Lü's Spring and Autumn Period recorded, 'Merchants wear elephants to abuse Dongyi. The Duke of Zhou chased him with his division, and as for Jiangnan', in the war between Yin and Zhou, elephant soldiers had been developed, and there were still many elephants in the Central Plains at that time. ”

However, Yin Shang hunted and killed wild elephants in large quantities, and a large number of ivory and ivory products were excavated in the Yin Ruins of Anyang. There is buying and selling, there is killing, wild elephants were hunted and killed in large quantities during the Shang Dynasty, and then they were expelled by the Duke of Zhou to go to the south, so there are almost no elephants in Henan Province except for the depths of the mountains and forests, and they are on the verge of extinction. Wouldn't it be completely extinct if you hunt it down and kill it if you find it?"

Huang Ji thinks that there is no problem with the deduction, and the Central Plains elephant is extinct because of the indiscriminate hunting and killing of human beings.

The root of everything is that Yin merchants love ivory, so that the Central Plains elephants that were originally all over Henan Province are only two or three big cats and kittens.

However, Huang Ji did not find that the past tense was unlocked.

This means that he is using the wrong concept, or the derivation is completely wrong.

"Isn't that right?"

Huang Ji tilted his head, the Central Plains elephant was not extinct because of indiscriminate fishing and killing by humans?

That's true no matter how you think about it...... Earlier, there was the legend of Emperor Shun's elephant: "Shun cultivated in Lishan." There are elephants for ploughing, and birds for it. ”

Could it be that in the era when elephants could be cultivated, they had already begun to hunt and kill like crazy?

Huang Ji pondered and tried to deduce the historical process of the Central Plains elephants that began to be hunted in large numbers in ancient times and became endangered.

However...... Still not right!

Huang Ji frowned, he could have changed to a better derivation, but he still chose to derive this.

He still doesn't believe it, is it so difficult to deduce the extinction of an elephant?

Then, until one o'clock in the afternoon, he couldn't come up with the correct answer.

"How did elephants become extinct?" Huang Ji pondered with his eyes closed.

Not to mention the correct answer, in fact, as long as the concept used is correct, the process is basically correct, and the result is more or less correct, then it can be unlocked.

It was his experience of unlocking the future state, and after trying various results, he was never able to unlock it.

This means that there is something fundamentally wrong with the derivation.

"Big brother?" Lin Li stretched and woke up, as if he was alarmed by Huang Ji.

"You say, how did the elephants in Yu Province go extinct?" Huang Ji asked him casually.

Lin Li was stunned and said, "Ah, there are elephants in Yu Province, aren't elephants in Africa and Southeast Asia?"

“...... Forget it, let's go out to eat. Huang Ji said.

Huang Ji should think about curing his illness, he finished his lunch and took Lin Li to look for something on the street, and soon he found the information he wanted.

It was a telephone pole covered with all sorts of small advertisements.

What is finally saved, what is a lot of money to ask for a child, what is a dog search notice, there is everything.

Huang Ji pointed to the bottom of the telephone pole, a very inconspicuous, only a business card-sized advertising sticker of 'all kinds of graduation certificates and qualification certificates', and said: "You contact this person and help me get a graduation certificate and a medical qualification certificate." ”

Lin Li nodded, pointed to the telephone pole, at the height of the person's face, a particularly eye-catching advertisement for a fake certificate, and said, "Why don't you contact this one?"

"You see that he introduced it in more detail, and the advertising paper is larger than others, and the position is also very eye-catching, and at first glance, it is the industry elite ...... in the fake certificate."

Hearing this, Huang Ji on the side laughed dumbly.

Lin Li believes that this kind of small advertisement, the bigger and more eye-catching it is, the more capable it must be.

But this is obviously a typical misunderstanding, and if you think about it carefully, it makes no sense.

"Isn't that right?" Lin Li couldn't help but ask when he saw Huang Ji laughing.

Huang Ji said with a smile: "The person who posted this advertisement is really attentive, seizing the best position, using a larger paper than others, maybe check it every day, if you find that it is covered or torn off by peers, you will paste it again, so we come at any time, it may be in the best position." ”

But this can only show that his advertising skills are better than others, and he can publicize, what does it have to do with his ability to apply for fake certificates? Not to mention the industry elite. ”

"I even think he's not in the stream!"

Lin Li scratched his head, not knowing what to do.

Huang Ji said: "Let's put it this way, the person who posted the advertisement for the fake certificate so well has probably been arrested......

"This ......" Lin Li was stunned for a moment, and then suddenly suddenly.

The advertisement is so good and the tree is so popular, maybe the business is better than others for a while, but after all, it is a violation and will not last long.

is so high-profile, even if you don't get arrested now, I'm afraid it's going to be soon.

In comparison, sticking your own small advertisements in an inconspicuous place is the real evergreen tree in the industry, and you can apply for a certificate for old fritters.

Even if you can wait for a long time to get a customer, it doesn't matter, it is better to be stable, and you can eat repeat customers and use them to attract new customers.

The purpose of posting small advertisements is just to attract the first customer.

People who can do this must be very confident in their skills, otherwise how can they eat?

On the other hand, those who work propaganda may be a manifestation of lack of technical self-confidence.

Huang Ji said: "What's the use of sticking it up? What's the use of even having good technology? No matter how good the technology of handling fake certificates is, the police won't arrest them? If the business is good, the tree will die faster, and the trickle of water is the king." ”

Speaking of this, he himself was suddenly stunned.

Lin Li was still nodding on the side, but was patted on the shoulder by Huang Ji.

"That's right...... Species that are large, powerful, and varied are not successful. Only by living long can you be truly successful. If you want to live long, you must adapt to the environment. Huang Ji said, he thought about what the problem was.

Lin Li blinked and said, "Ah, can you get the survival of the fittest with a fake certificate?"

"There is no survival of the fittest, only survival of the fittest. Huang Ji corrected: "The success of a species does not depend on whether it is strong or not, you can't beat me, but can I say that you are inferior?"

"On the contrary, the higher the niche occupies, the more likely it is to become extinct because it is difficult for them to adapt to the environment!"

"The dinosaurs were strong enough that they occupied the pelagic niche, while the mammalian ancestors were very weak at the time, at the bottom of the food chain. But after a catastrophe, the dinosaurs all went extinct, and the weak mammal ancestors survived. Who do you say is superior and who is inferior?"

Lin Li scratched his head and said, "Yes...... I remember, big brother, but what are you telling me about this?"

"It's nothing ......" Huang Ji smiled and began to deduce the extinction of the Central Plains elephant.

In the early years of the Northern Song Dynasty, a large number of mountains were developed, woodlands were cut down, and wild elephants had nowhere to forage for food or hide, so they could only break into human habitats to eat crops.

Provoked humanity, no doubt, pawn.

This is the reason why the last elephant died, not because humans wanted to kill it, but because it was forced by the environment.

Yin merchants are indeed good at killing, hunting a large number of wild elephants to obtain ivory, but they have not killed wild elephants for hundreds of years, indicating that they are also breeding, or hunting regularly and controllably.

Henan Province was one of the most suitable places for agriculture at that time, and instead of killing the enemy's war elephants, the Duke of Zhou expelled them to the south, the reason for the expulsion was to prevent elephants from trampling the farmland, and the province at that time had been heavily exploited, not enough to feed so many wild elephants.

"The change of the environment is probably also due to human beings, but it is certainly not in line with the attitude of historical inquiry to directly define it as human causes, and then use this as a premise to combine the clues in the literature. ”

"The extinction of the Central Plains elephant is due to the loss of habitat. Most of the habitat loss is caused by humans, but it is due to the development of agriculture. ”

"No, agriculture is only a later process, and it was earlier that led to the mass migration and death of elephant herds...... Yellow River!"

Huang Ji is also a top expert in the field of biology, but when deducing the extinction process of a species, he does not comprehensively consider the impact of the environment on the species.

It's really that he has just mastered the research methods of historians, and he is too eager to find clues from the literature.

As everyone knows, light literature has a fart use. To deduce the historical process of a thing, we must consider it in all aspects, and the more knowledge we use, the closer the result will be to the truth.

A mere historian can't be a historian, and all the top archaeologists are biologists and geologists at the same time...... Even anthropologists.

When Huang Ji clarified this, the past state of information was opened.

"Concrete floor?" Huang Ji turned his head and walked into the park next to him.

In the park, he looked at the earth beneath his feet, right where he stood, as if time was going backwards, he was going back in time!

"Hiss......" Huang Ji felt that his brain could not bear it, and hurriedly blocked most of the information.

He didn't want anything else, only geological information, and the pressure was reduced.

100 Years ...... Two hundred years...... A Thousand Years ...... 2,000 years...... 2,500 years...... This is the capital of Korea.

"Hey, uh! Even if you only accept geological information, won't you be able to do it in 2,500 years? There is a fart geological change in 2,500 years!"

The yellow pole shields it, and then the pressure disappears.

"Huh?" Huang Ji quickly discovered that he could still trace back to the ancients, but the content was blocked.

When rehearsing the future, the reason why it is difficult to trace it too long is because time is passing and changing every moment, so Huang Ji is suffering from the impact every moment, and the duration of the rehearsal is very short, and he has to faint.

But the past state of information will not change!

History is history, and even if the earth is destroyed now, history will be like that. Information that doesn't change, perception is like this today, perception will be like that tomorrow!

So he doesn't have to worry at all, anyway, history won't change, he pushed back thousands of years ago in the shielding state, and then lifted the shield, there was no pressure at all.

Not to mention thousands of years, even if it is backward billions of years, it is possible, the duration of backward is infinite, as long as you don't receive information continuously for a long time.

History is there, and he is only querying, not deducing. It's not the same as the futuristic state.

The only thing that limits him is the amount of information, he can only roughly check the context, and if he knows too many more detailed details in a short period of time, he will be dizzy.

Huang Ji closed his eyes and quickly felt that four thousand years ago, there was a country here!

Where he was, everywhere he felt around him, there was a flood! The waves directly flooded here!

"I can't see anything just by looking at the geology, so let's open it up a little more......" Huang Ji lifted the shield, and felt a severe headache for a while.

But correspondingly, he also knew what the flood was all about......

3,950 years ago, an earthquake struck the upper reaches of the Yellow River, forming a natural flood storage dam, which suddenly burst half a year later, flooding the middle and lower reaches.

Huang Ji kept manipulating slightly, in order to ensure that he could withstand the pressure, he purposefully inquired about some information, and if he didn't want to know for the time being, then he would block it all, and if he wanted to know anything, he would open the information.

Through this repetition, he gradually understood the real reason for the extinction of the Central Plains elephant.

The flood lasted intermittently, periodically for forty-two years, and even destroyed many small ancient nations.

The people in the middle and lower reaches of the river basin were in dire straits, and civilization was hit hard, and just under his feet, an ancient city was completely buried by the flood cement sand.

As the Yellow River passes through Xinzheng, it is conceivable that the entire province of Henan is covered with a dense water network, and the rainy season is almost certain to flood.

"The old river was washed away, the flood was intermittent, receding and coming and going...... People are eager to govern it. ”

So after forty-two years, three generations, and finally to the hands of Dayu, people finally governed it. ”

In order to survive on their own, the people of this area have adapted to disasters by digging rivers and dredging rivers and dredging floods.

Human beings are species that will take the initiative to modify nature, and this wisdom is also part of human adaptation to the environment, but they have adapted, and some of the animals that originally lived in the Yellow River Valley have become extinct.

The mutation of the ecological environment will lead to the extinction of some species that cannot adapt, and the higher the niche species, the more difficult it is to adapt to the mutation of the external environment.

Central Plains elephants, they used to be at the top of the food chain, and when they don't count humans, they have no natural predators.

Floods have had a devastating impact on humans, as well as on elephants, resulting in the death of large numbers of elephants in the wild.

However, this will not make them extinct, what really makes wild elephants critically endangered is Dayu's control of the water!

Dayu dredged the waterway, and then diverted the Yellow River and sent it to the north...... So that most of the entire Henan Province is located in the south of the river.

And that's not the point, the point is that he opened up the mountains and drained the streams, artificially excavated a large number of tributaries, and destroyed the habitat of many animals......

Natural disasters and man-made disasters have carried out multiple strikes on wild elephants in the past 42 years, and the environment has undergone drastic changes.

After two successive baptisms, wild elephants still survived tenaciously, but ushered in a third wave of chronic blows...... Agricultural development......

Dayu water control, for the development of agriculture is undoubtedly a huge help, artificially dug beside the river, human beings have established their own new gathering area, let the tributaries irrigate farmland, this water conservancy project makes agriculture advance by leaps and bounds.

But this does not work for wild elephants, but rather gives them despair, as they have lost a large source of water, and elephants have to drink a lot of water every day.

Humans could not have allowed them to be near the rivers that irrigate their fields, and to the water conservancy projects that they had spent three generations building with great difficulty......

So far, Yu controls the water, Yu is clothed in Kyushu, the south of the river is set as 'Yuzhou', and the original wild elephants run around on the fertile plains of Yuzhou, there is no trace of wild elephants, except for those who migrate, only a few can survive in the mountains and forests, until extinction.

Huang Ji never expected: "Dayu, it turned out to be your ......"

"This is nature, and to save our fellow human beings, we must harm other species. Some shout, some weep. ”

......