Half a month after the "Wolverine" incident, a physics classroom at Harvard University.

Today's class for students is Lisa Randall, a world-famous theoretical physicist, recognized as the world's most authoritative extra-dimensional physicist, a famous alumnus of Harvard University, and a beautiful professor who has been featured in Time magazine several times.

Because of her busy research work, it is difficult for this beautiful professor to find time to teach, and the opportunity is rare, and even the physics students at the Massachusetts Institute of Technology next door are mixed in to listen to the lectures.

Of course, Lu Xiaoqi was also in class, and he rarely had the opportunity to listen to this kind of academic authority, so he went to the classroom early.

Six years ago, Professor Lisa publicly proposed one of her research hypotheses, that is, the existence of a "fifth dimensional space" on the earth, not the mysterious alternative dimension described in science fiction movies or novels, but the "fifth dimension" that exists in reality and is closely related to the four-dimensional space.

The reason she came up with the hypothesis was that during a nuclear fission experiment, she accidentally discovered that a particle had disappeared for no apparent reason.

As we all know, nuclear fission reaction is a process in which heavy nuclei are split into several light nuclei and lose mass during the reaction, releasing energy.

However, this does not mean that the small particles that split will disappear, and in general, they can be observed or even captured in the physics laboratory.

Since the disappeared particle cannot be found in the space that humans can observe, it must have gone to another dimensional dimension, that is, the "fifth dimension".

When Professor Lisa proposed this hypothesis, it did cause a sensation, and many physicists tried to repeat her experiments, but did not find the so-called "disappearing particles" again.

This hypothesis is ultimately considered a hypothesis, as there is no reproducible and reverberated experimental data to prove it.

Today, Professor Lisa is here to give a lecture to re-promote her hypothesis, and secondly, to select some students as her lab assistants to go to Brookhaven National Laboratory on Long Island, New York, to conduct relevant experiments, and she wants to test her hypothesis herself.

Brookhaven National Laboratory built the world's only heavy ion collider in 1984, and Professor Lisa believes that the heavy ion collider is more likely to prove its claims than the proton collider in Europe.

Professor Lisa did a test in class to test everyone's understanding of quark-gluon plasma and other microparticles, as well as the enjoyment of the multi-dimensional universe, and a total of 5 people were selected, and Lu Xiaoqi was also fortunate to be one of them.

This time I went to Brookhaven National Laboratory for 3 months, and Lu Xiaoqi and other 5 people will get extra high credits, and if the 5 of them complete the credits of other delayed courses through video teaching and self-study, it will not affect their studies.

Because Brookhaven National Laboratory is located in a remote, sparsely populated area, and life is not very convenient, they will have 3 months away from city life.

Therefore, before they officially enter the lab, they can go to New York, the nearest metropolis to the lab, for a week.

………………

It's a pity that even Lu Xiaoqi, including 5 people, seem to be quite "nerds", the school and Professor Lisa's studio together provided them with room and board and other funds for the week, just to make them relaxed, but these people are not hedonistic, one went directly to the library of New York University to read books, after all, each university has different collections of books; Two went to see this year's National Collegiate Robotics Competition in New York; The remaining one invited Lu Xiaoqi to the American Museum of Natural History.

The student who invited Lu Xiaoqi is named Kevin, a native of New York, who was admitted to Harvard last year.

Although Kevin studied physics, he had a wide range of interests, especially paleontology, which he was once obsessed with.

may be because of Lu Xiaoqi's humble attitude and good temper, so Kevin got along well with him and decided to take Lu Xiaoqi to visit the place he played the most since he was a child - the American Museum of Natural History.

Since entering the museum, Kevin has been like the most professional docent, introducing everything on display here to Lu Xiaoqi like a few treasures:

The exhibition scope mainly includes five aspects: astronomy, mineralogy, human history, ancient animals and modern animals. There are large quantities of dinosaur and ancient mammal fossils, large quantities of specimens of birds, extinct creatures, and a large number of specimens of gemstones, molluscs and marine life.

Kevin was very interested and talked endlessly, and Lu Xiaoqi also listened to it with relish and benefited a lot.

"Phew"

The two of them were looking and walking, probably paying attention to those strange specimens and skeletons, but they didn't pay attention, so Lu Xiaoqi was hit by a girl who lowered her cap.

Lu Xiaoqi's body has already strengthened beyond the biological category, so although he didn't pay attention to it at first, he still took the initiative to retreat a little at the moment of collision, so as not to hurt others.

To Lu Xiaoqi's surprise, although she retreated, the girl didn't fall, and she didn't even seem to be hurt, she just looked up at Lu Xiaoqi, then lowered her head, bypassed Lu Xiaoqi, and left in a hurry.

Although Lu Xiaoqi's current body has not yet reached the level of "human flesh golden hoop stick" and "death if you are next to it, and death if you rub it", it is not so understatement, right?

Lu Xiaoqi frowned, repeatedly looked at the girl's back, thinking back to the face that the girl showed when she looked up just now, he always felt that he had seen her somewhere!

"Lu!" Kevin walked over and put his hand on Lu Xiaoqi's shoulder, with a narrow expression: "Isn't it?" That's what you like? It's a pity that you were too stupid to take the opportunity to get someone's phone! ”

Lu Xiaoqi shrugged: "No, it's just familiar!" ”

"Haha, what's the use of telling me? Isn't it the classic pick-up line that you should catch up with and say, 'I think I've seen you somewhere?' Kevin winked and laughed.

Lu Xiaoqi rolled his eyes, ignored it, and continued to walk forward, the guide board showed that the fourth floor was the display area of ancient fossils, to be honest, he was still most interested in dinosaur fossils.

"Wait for me!" Kevin followed, then overtook Lu Xiaoqi and posed at the entrance of the exhibition hall on the fourth floor: "Welcome to my favorite place in childhood!" Dinosaur Paradise! ”

……………………

Outside the museum, a girl in a peaked cap got into a taxi, seemed to have been holding on to something, suddenly turned pale, took a long breath, and her ribs were a little dented - her ribs were broken!

She put her hand inside her clothes and rubbed it a few times, and the driver saw this action through the rearview mirror, and his eyes were about to pop out!

Inside the driver's clothes, which were invisible, the girl's hands had become as dry as old trees and covered with cyan scales! The monster's hands were shrouded in a layer of black mist, and on the back of her neck, a black number "6" also glowed black.

In just a few seconds, the girl's injury was healed!

She let out a sigh of relief: "Please send me to NYU, thank you!" ”

The car started, and the girl looked through the window in the direction of the fourth floor of the museum, and the corners of her mouth flashed an eerie sneer.

……………………

The ancient fossil exhibition hall on the fourth floor actually contains not only dinosaur fossils, but also many ancient mammal fossils and bird fossils that have long been extinct.

Not only are there the famous saber-toothed tigers and mammoths, but there are also some older rodents.

There are a lot of kids here, especially around dinosaur fossils, and it's clear that giant dinosaur fossils are children's favorites, so it's no wonder Kevin spent a lot of his childhood here.

The children asked their father or mother with great interest what this is and what it is, why this and why that, the innocence on his face reminded Lu Xiaoqi of his childhood, the bitter and difficult years as an orphan.

Looking at the smiling faces of the children, Lu Xiaoqi also seemed to be healed, just like he suddenly became smaller, mixed among the children, and experienced the gentle teaching of parents who had never been before.

"Ahhh A frightened scream interrupted Lu Xiaoqi's imagination, a woman in a short skirt frantically shook her legs, as if something terrible was lying on her legs, she screamed and shook her legs while slamming the leather bag in her hand, attracting the attention of everyone around.

This is a museum, and loud noises are forbidden, and security quickly arrived.

"Please be quiet! Lady! A tall black security guard came over, and the woman turned, still shaking her legs, screaming, "Get it off!" Is this a prank on your museum? What exactly is this? Prop? ”

The security guard looked at the woman's calf, and suddenly, a black shadow burst out of the woman's leg and quickly pounced on the security guard's neck!

The security guard was caught off guard, and his tall body fell backwards instead of standing firmly.

It was only then that everyone saw that it was an animal with tan fur all over its body, about the size of a cat, but it looked like a mouse, but it must not be a mouse, because it had scarlet eyes, sharp claws, and canine teeth about 2 inches long that protruded from its mouth!

There was no time to rescue, the "rat" had already bitten the throat of the black bodyguard, and immediately blood splattered, and the surrounding tourists panicked!

"Oh God! What kind of monster is that? ”

"Quick! Who will save him! ”

"Fight 911!"

……

Lu Xiaoqi squeezed through the crowd, ran to the security guard who fell to the ground, pinched the head of the "mouse" with his hand, and with a slight force, the head of the "mouse" was pinched and exploded, and the body was removed.

Carrying the corpse of the "mouse", Lu Xiaoqi asked Kevin: "I'm not familiar with wild animals, what is this, do you know?" ”

"I don't know," Kevin shook his head solemnly, "but I'm sure, this isn't a modern mammal!" ”

"Whew!!"

Suddenly, a tiger roar echoed throughout the hall!