"What a strange puzzle!" This was Lu Feng's reaction when he saw the content of the puzzle for the first time. At first glance, the question looked similar to the true or false question in the Mathematical Olympiad, but the question type was obviously about solving unknown numbers.

, especially that "if you know it, I will know it", what does this mean?

"Leave it to me! Leave it to me!" Since Nanami volunteered, Lu Feng didn't bother to worry about it. Even if he didn't know the conditions and just used two numbers between 1 and 100 as the basic conditions, there would only be 10,000 types.

Maybe, if you write a dozen lines of program code, you can enumerate them in seconds, so there is really no need to worry.

On the contrary, this ruins is not just a simple function such as the sacred digital machine and prophecy created by the agent. Judging from the vast and complex maze and this fire gem containing amazing energy, there should be a deeper secret.

As Lu Feng expected, Nanami soon had the answer.

"Oh, you are so happy for nothing!" The expression on Nanami's face at that time was very disdainful, and she almost gave her middle finger, which was unbecoming of a lady. "This is a puzzle that has existed for a long time. In 1969, a Dutch mathematician

Hans Freidenthal (hal) published this puzzle, which became known as 'The Most Improbable Puzzle'."

Then Nanami gave a rough explanation of the solution. Those two seemingly nonsense conditions are indeed valid conditions: the first sentence can deduce that the two numbers cannot both be prime numbers; the second sentence can deduce that the sum of the two numbers is an odd number, and cannot be 2.

The sum of a certain prime number. A little bit of Goldbach's conjecture was used. Based on this condition, many solutions can be obtained, but the more recognized ones are 4 and 13.

"Countless people have already made it. It's a waste of my time!" Nanami complained angrily.

Lu Feng had already known the girl's character, and Lu Feng could only smile bitterly. At this time, Takenouchi Sona's words aroused Nanami's interest again, and the previous unhappiness was swept away: "Even if we get the result, what will happen to this result?"

Into this gem?"

Yes! This gem does not have a keyboard, so where should the results be entered?

Nanami stroked the fan thoughtfully: "This issue is worth studying!"

At the bottom of the sea, the giant whale beast rises up and sprays out huge amounts of water once a day. With the movements of the giant whale beast, the Steel Island also begins to shake slightly.

I remember that when Demonmon used the black gear to split Fayilu Island into more than a dozen pieces and sailed across the ocean, except for the few islands that were successfully destroyed by Yagami Taichi and the others and returned to Infinite Mountain, the rest of the island blocks

Either it continues to move in an unknown direction, or it stops in the sea and becomes an isolated island due to the collapse of the black gear. Therefore, the new Steel Island has actually shrunk by more than half of the original Fayilu Island. Only then can the giant whale beast carry a

The island, coupled with the addition of several sets of underwater propellers, the moving speed of the Iron Island is not even much slower than that of the whale beast when it is empty.

Things are like this for the time being on the Iron Island. All Lu Feng's men are concentrated here, and the number is more than five hundred. Unfortunately, most of them are slug beasts living in underground pipes... The good news is that Andulumon's

The production line in the factory was confirmed to have been part of the production line of the Guardian Beasts of the Empire of Steel. The Black Goddess and Thomas are trying to restore this production line, and Ogamon also followed Leomon to the Shaba Continent, saying that it was for

Lu Feng is looking for new subordinates.

On the Island of Steel, in the underground city named "Third New Tokyo City", Lu Feng signaled in the dedicated quantum channel: "Are you all ready, Black Ritual Goddess?"

"Everything is ready, countdown to start teleportation. 5, 4..." The black sun goddess Eve's face showed no expression at all, as cold as a machine. "1! Teleportation starts!"

A blazing blue light flashed through the device, and under the flow of countless quantum quantities, Lu Feng and Takeuchi Sona instantly turned into two streams of data and merged into the quantum stream, entering the cold routing link...

It is no longer a temporary borrowing of the quantum computer at the cross-over bridge, but a quantum transmission channel built in a specialized laboratory. The goddess of black sun operates a series of instruments and computers to convert Lu Feng and Takeuchi Sona into data.

Sent into the online world, even Toma and Nanami don't know.

The Black Goddess watched Lu Feng and Takenouchi Sona disappear into the quantum channel. With a "beep" sound, her originally cold and stern face suddenly softened, and her eyes regained their vitality.

"Eh!? Eve, why are you here? Why didn't Quanangangmonx see him?" Nanami's video suddenly floated in and she was looking around.

"Eh? Ah, No, I don't know, do you?" Eve said calmly, with a confused look on her face, so that Nanami had no way of doubting her.

"Did he go out again?" Nanami grabbed her hair and the video shook up and down. "This guy doesn't tell me every time he goes out. Hmm, I'll make him look good one day!"

Time, the evening of August 1, 1999. Place, Shibuya, Tokyo, Japan.

Takenouchi Sona appeared on the roof of a commercial building, and a big book fell down at the same time. The girl wanted to carry the big book on her back like before, but Lu Feng stopped her.

I saw the big book tumbling, slowly floating up, and suspended in the air. With a "tick" sound, a large amount of light was emitted. The light was not dazzling, but flickered, and had a certain pattern. These lights intertwined, and finally stabilized, unexpectedly

Formed into a human shape!

projection!

What is the main way that humans and most living things determine the existence of a living thing?

Pictures, sounds, smells, temperatures... So if these standards are quantified and a person receives these signals, will he judge whether this creature exists or does not exist?

Remember that Ogamon Taichi Yagami met on the street? Although no one could see it, it fought a battle with Agumon and penetrated the wall of a residential building. In a sense

That's a projection! A projection of a certain Ogamon from the Digimon world!

So we used Empire of Steel's advanced light illusion technology to create the shape and convey the image using 3D projection; we used energy interference to convey the temperature; coupled with Lu Feng's voice, a brand new image was born!

Lu Feng, who had regained his original eighteen-year-old appearance, clenched his fists and said, "Eighteen years old forever!" Who knows how many years I have lived?

Although he did not really regain his human body, it was just a deceptive appearance, and Lu Feng was already very satisfied.

"Huh!?" Takeuchi Sona pointed at Lu Feng in surprise, and after a long time she stammered and asked: "You... you are Quanangangmonx!?"

"Why, you can't recognize it after changing your appearance?" Lu Feng turned around and asked. Behind him, "Magic Laboratory" has been suspended in the air. It looks like Lu Feng is carrying this big book on his back.

"Is he really a Quanangangmon human?" After saying that, he stretched out his hand and poked Lu Feng.

"Don't try, it's just a projection." Sure enough, the girl's fingers passed through Lu Feng's arm, and there was only a slight feeling of blockage. The effect of the energy field at that time, if the energy field was turned on to the maximum, a cylindrical shape could be created.

space to prevent people from being discovered. In this way, vision, hearing, temperature, and collision volume are all available, and it is easy to hide it from most people.

"It's so amazing!" As a result, Lu Feng's words not only failed to stop Takeuchi Sona, but instead made her start to poke Lu Feng enthusiastically. It was not until Lu Feng had to turn on the collision volume that he was freed from the rag doll.

treatment.

"August 2nd? It's only one day later than Yagami Taichi and the others. Things should not have changed much." Lu Feng's eyesight was very good. He saw the time and date from the wall clock in a building and knew this.

location at the time.

Takenouchi Sona suddenly remembered a big question: "How should I tell my family about not going back last night!?"

"Don't worry!" Lu Feng hurriedly advised: "You should contact Taiyi and the others first and talk about it, it should be fine."

The huge neon lights on the building were flashing, and the night wind was blowing, and it was a bit cold. When the two were about to leave, the sharp-eyed Takenouchi Sona suddenly noticed two Digimon on the traffic light-Pumpkinmon and Oremon!

"They are subordinates of the Vampire Beast." Lu Feng didn't remember this plot very clearly, but his notebook when he was in the turbulence of time and space said that Pumpkin Beast and Ore Beast were killed by the Vampire Beast because they became friends with brothers Ishida Yamato.

Kill to make the friendship badge glow.

Putting the notebook back on the bookshelf, Lu Feng couldn't help but sigh, memory is indeed something that comes and goes. Doubling it every now and then, you never know when the memory will emerge. All in all, these two Digimon are pretty cute.

.

"Wow~! This is Shibuya, which is also famous in the digital world?" Pumpkinmon, lying on the traffic light, sighed.

"Are they Shibuya-type humans?" Oremon immediately agreed. The two cheered and rushed into the noisy crowd: "Then let's get high together!!"

Takenouchi Sona suddenly became anxious. She was afraid that these two Digimon would hurt humans. "Quan Angelmon x, let's go after them quickly!"

Lu Feng reminded: "Now I am a human being, so you should call me 'Lu Feng'!" He was very interested in what Pumpkinmon said just now! "Shibuya, who is also famous in the digital world"?
Chapter completed!