Stockholm, Arlanda International Airport.

In the twilight, the A330, with its tail painted in a red phoenix, landed smoothly on the runway, then taxied forward and stopped behind Terminal 5.

The bridge automatically stretched out to connect the cabin door, and the Air China attendant in red uniform opened the cabin door and bid farewell to the passengers.

Sending a text message to her brother about her arrival, Alicia waved to Emma who was not far away, stood up and went to her carry-on luggage, walked towards the hatch, and soon set foot on the soil of her own country.

The familiar airport and familiar people made her excited after being away from home for a month, and she wanted to say something.

The emotional verses were still in the making, and the voice of a companion was heard, "Ash, goodbye! I need to see if my plane is still there." ”

The Swedish girl nodded and waved her hand, "Then good luck and we'll see you in the summer!"

The BDC ended successfully, and the participants from all over the world took the air tickets provided by Bee Games to embark on their return journey one after another. Emma's destination was Bergen, Norway, but she changed her itinerary and boarded a plane to Yanjing with Alicia before taking an international flight to Stockholm. When she arrived, Alicia was home, but she had to continue to connect and take a flight to Bergen Airport in Norway, but she didn't have time to make a long stop.

After passing through the security check and going to the baggage carousel to claim her luggage, Alicia looked at the luggage tag again and again to make sure she had made a mistake, and then dragged her rimowatopas silver suitcase towards the arrival hall.

Holsten Larsson stood against the wall, looking down and fiddling with the phone in his hand, not noticing anyone approaching. Then he was hugged from the side, "Brother, I miss you, do you miss me?"

Turning his head to look at the blonde girl holding him, he said very casually: "Of course I miss you, do you know how sad I am to leave me alone at home and run around the world by myself?"

"What kind of round-the-world trip is this? It's just a plane around the world," Alicia was speechless, "Besides, you didn't say you could do it before, why are you blaming me now?"

Holsten answered very sincerely, "I regret it, okay?"

Alicia let go of the other and pulled her suitcase towards the elevator.

After taking a few quick steps and graciously taking the suitcase from his sister's hand, Holsten said: "I thought that the bee game was just inviting you to go over for vacation and leisure, so naturally I didn't want to waste time by running away." But I didn't expect them to prepare so many good things, as well as dream writing equipment, it's really amazing, how did they do it? Sister, do you know it?"

Her brother chattered and threw out one question after another, but Alicia didn't have the slightest sense of boredom. She is a girl after all, and she has been running to the other side of the world alone for so long, and she naturally accumulates a lot of longing in her heart. Before these thoughts and favors are consumed, her brother's voice will only make her feel kind, and it will definitely not become noise.

Seeing that her sister kept nodding with a smile on her lips, but she didn't answer her own questions, Holsten finally realized that something was wrong, and reminded her: "Ellie, what are you thinking? Please answer my question!"

"Ahh

"Bee's dream writing device, I want to know more?"

"You said LMD, I participated in the trial experience, and it was really amazing. ”

"Huh?" Holsten was shocked, "Ellie, why didn't you mention it before?"

The latter turned to look at his brother and spat out three letters: "NDA." ”

NDA is an abbreviation for Non-Disclosure Agreement, which translates to Non-Disclosure Agreement. In order to create suspense, the Bee Research Institute and Alicia signed an agreement that the latter would not disclose information to the public during the entire probationary period, and violators would be divided by a hefty fine. Now that the event is over, people are leaving, and the relevant information will naturally be lifted.

"Can you say that now?"

"Of course. But," Alicia said, gesturing to the ticket machine not far away, "let's buy a ticket and get on the bus, and I'll tell you later." ”

Arlanda Airport is located 42 kilometres north of Stockholm, and the fastest way to get to the city is to take the Arlanda Express to the basement level, where you can transfer to other vehicles and get home in an hour. The fare of the express train is twice as expensive as the airport bus (flygbsarna), but the siblings are not yet over 25 years old, and the airport express is half price, while the bus is only 7% off.

Helping his sister stuff the suitcase into a luggage rack, Holsten pulled the other party to sit down, and couldn't wait to ask, "Can you talk about it now?"

"Hmm!" Alicia nodded, "On the third day of arriving on Heron Island, Emma and I went to see the test screening of 'The Wandering Earth'......"

As he was talking, Holsten interjected, "Excuse me, sister, when it comes to this movie, do you have the VR disc I want?"

"I'll give it to you when I go back," Alicia nodded, pointing to the luggage rack above her head, "I also brought you two gifts, both of which are good things that are not easy to see in China." ”

Holsten has followed his sister's Twitter on Twitter, and he has long found clues from it and knows what is in the box, but he still asks very cooperatively: "What is it?

The latter sold Guanzi, "I won't tell you first, I'll talk about it when I go back." ”

Then, she pulled the topic back, "After watching the movie, Emma drew three Dream Learning Machine experience vouchers and took me and another Finnish friend to participate in the experience. How to be asked to participate in a two-week visual recognition training, saying yes is so that the results can be guaranteed. ”

Speaking of this, she smiled, "Later we learned that recognition training only took three days, but the real dream learning machine had not yet been built, and then we trained for fourteen days. ”

"Haha," the blonde boy smiled cooperatively, "how do you train?"

"Lying on a bed with a special VR headset on your head, and playing a game in the virtual world," the girl said, "yes, that headset has a really great display, probably the best headset in the world." You know, I don't have the same vision in both eyes, and wearing a VR headset makes me uncomfortable, even with the Bee N7, but that device doesn't have this problem, and the display is very, very natural, just like wearing regular glasses. ”

"Really?" Holsten was intrigued by her, "how did they do it?"

"It's like a new display technology called OWD (Optical Waveguide Display), which uses the same technology as Microsoft's Hololens but does it better than the Americans. ”

"Wait," the former scratched his head, "Hololens is a hologlass, but you said that the VR headset you wear, OWD can also be used on VR?"

"Of course!" Alicia nodded in certainty, pointing to her eyes, "and it works!"

A waveguide is a transmission device that guides electromagnetic waves, and an optical waveguide is a specific device that transmits light using the principle of total reflection of light, the most common being various optical fibers.

Different from mature optical fibers, the technical requirements and manufacturing difficulties of optical waveguide display are two or three orders of magnitude higher. Optical fiber only has requirements for transmission distance, as long as the optical fiber is not attenuated too much inside, it is qualified, but the latter requires that every ray of light appear in the right place. As long as the manufacturing and protection problems of the reflective grating are solved, it can be happily mass-produced and marketed, but the bee owd is more troublesome, they require the equipment to accurately reproduce the three-dimensional direction of light, plus the concept of time, which is the so-called four-dimensional square,

"Light field?" Hearing her sister's description, Holsten couldn't help but exclaim, "Isn't the light field a scam?" Lytro deceived a wave, and Magic Leap changed directions to continue to deceive. ”

"No, no, no," Alicia pointed to her eyes again, "just because Lytro and Magic Leap can't do it doesn't mean bees can't, and my eyes are proof of that." ”

Light field is not a new concept, as early as the last century, there have been scholars in this area of research, and later the American start-up Lytro used the principle of light field photography to launch a home light field camera, claiming to be able to capture 11 million rays, record three-dimensional light field information, so that users can freely adjust the focus of the picture.

However, this product failed, its actual pixels were far smaller than 11 million, and adjusting the focus required special software, both the display effect and the convenience were crushed by the smartphones of the time. When mobile phone manufacturers used multiple exposure technology to achieve the effect of taking pictures first and then focusing, Lytro had completely lost its way of life, and now it has decisively switched to playing VR virtual reality.

Magic Leap is another company working on light field display technology, and they are working on a fiber-scanning display that claims to be able to draw simulated light field information, which can be overlaid with real light fields to allow users to see the most perfect AR augmented reality picture, or holographic picture.

Unlike Lytro, which has at least one product, the Magic Leap is only a large and imperfect prototype. However, they are well aware of the truth that "they are afraid of deep alleys", and they set up channels on YouTube early and upload elaborate promotional videos. With its wonderful pictures and promises, ML has gained a wave of fans, including industry giants such as Google and Ali, and has received more than a billion dollars in venture capital.

The company soon found out that the giants' money was hot. Because of the high pitch, they have received the attention of the world's technology media, but they have never been able to come up with a usable demo product, and the so-called actual video is actually a CG image created by the special effects studio, so many people question the authenticity of the technology, and even regard it as the next Theranos. The latter claimed that a blood test could be completed with just a drop of blood, and the powerful function that pointed to the pain point was quickly sought after by consumers and the investment community, with a valuation of as high as $9 billion, which can be called a super unicorn, but it was revealed that the test results were fraudulent, the valuation collapsed ninety percent of the time, and the company also got into a lawsuit and faced investigation.

Whether Magic Leap is a bubble scam or not, Alicia doesn't know, she only knows that seeing is believing, and the display effect of the Bee OWD headset, with herself and a group of testers testifying, can't be fake.

"Okay, okay," Holsten shrugged, agreeing with his sister's statement, "I hope you're not hypnotized by them." ”

Alicia turned her head abruptly and glared at her brother fiercely, "You've just been hypnotized!"

The latter shivered subconsciously, a look that reminded him of the fear of being dominated by his sister.

The boy shook his head again and again, trying to shake these childhood memories out of his head, but then he heard his sister Yuyou say, "Perhaps, we may really be hypnotized." ”

Hearing this, he was nervous and wanted to ask what was going on, but he heard Ellie smile and say, "Otherwise, how can you see the scenes in science fiction movies?"

Rolling his eyes secretly, the boy asked, "What did you see?"

Alicia's eyes drifted into a memory.

"On March 31st, the Bee Research Institute called all 54 of us to the experience, told us that the dream learning machine had been built, let us start the experience by lottery, and reminded us to schedule the time to ensure that we could fall asleep quickly during the experience. Then I played games all night, and the next day I went to the Dream Institute with dark circles under my eyes and sunglasses. ”

"Wait," Holsten interjected, "why not use sleeping pills?"

The girl turned around and poked her brother affectionately on the forehead, "Stupid Hall! The hypnotic effect of drugs is not the same thing as falling asleep naturally, and it is not easy to dream after taking medicine." ”

The latter nodded slightly, "I see." ”

In fact, what she said was not rigorous, and those that were not easy to dream after eating were early sleeping pills, because they strongly inhibited REM (rapid eye movement sleep). It is cool to have no dreams for a while, but after stopping the drug, it will quickly rebound and frequent dreams will cause people to worry. Later sleeping pills were improved to reduce the inhibitory effect on the REM phase, so that users could dream normally, and the sleep structure and actual effect were close to the real one. However, the new drug still interferes with the experimental effect, and the Dream Institute specifically excludes it from the official use experience.

"The dream learning machine is a bit similar to the training equipment we used before, it is also a bed and a VR headset, but the helmet is larger, and there is a shield-like thing at the head of the bed. Playing games all night was still very useful, and it didn't take long for me to fall asleep in bed, and then I had a dream. ”

"What did you dream about?"

Alicia paused slightly, and suddenly read in broken Chinese: "Killing the enemy to practice, capturing the treasure refining weapon, my subordinates are three thousand, but I am free from the immortals." ”

This sentence is actually the promotional slogan of the latest DLC "Demon Cave Master" of "The Monkey King", and the advertisements for the bee game are overwhelming, and many foreigners have heard this sentence, although they don't know what it means.

"Uh-huh, ahem!" Holsten choked on his own saliva and turned to his sister, "Is it funny to joke?

The former shrugged, "I'm not kidding, I did these things in my dreams. It's very similar to the content in the promotional video, but there are differences in details, the video is a male monster, but I used a female monster, a very beautiful deer demon. ”

Still in disbelief, Holsten asked, "Are you sure it's not the result of a night of playing?" ”

Alicia nodded affirmatively, "Sure it's not." During that time, I was playing 'Silk Road' and didn't come into contact with 'Monkey King'. And more importantly, they recorded my dreams and showed them to me afterwards, which was very close to what I remembered!"