The stars hide in the enchanting red mist, emitting white, blue, and red dazzling light, like the star gods watching the people on the earth through the veil.

The savages were still praying, and it seemed that this ritual would never end.

I don't know what kind of fish Ivan's grilled is, the meat is a little rough, and it tastes like old beef, but hunger makes people's taste buds bloom like flowers, and with salt, this charred meat tastes like the most delicious meal in the world.

The crow kept chirping while eating: "Quack, it's so delicious!" It's the best meat I've ever tasted! ”

Su Huilan smiled: "Didn't you say that it was not as delicious as your boss's sauce elbow?" ”

"At this time and that time, if there is sauce elbow now, it must be delicious, without sauce elbow, this meat can be ready!"

The crow croaked twice, and suddenly glanced at Su Huilan, "Hey, don't think I'm saying that you can also settle down, for a man in charge, a woman, you can't do it!" ”

Su Huilan almost choked on a piece of meat in her esophagus. She finally understood a truth, don't think about taking advantage of this crow in her mouth at any time.

She no longer paid attention to the crow, and found that Situ and Aoki suddenly stopped talking at the moment, and the atmosphere seemed a little silent and awkward. She wanted to ask Situ about the alliance, but she felt that the timing was not right. Or maybe she still has some ambiguity in her heart, and she doesn't want to be led by the nose. The conversation between Aoki and Situ just now made her feel that this man was a little unreal, and if she talked about her dreams, she would inevitably talk about many things that she didn't want to mention. She didn't want to reveal her secrets and her enrichment to someone who was terrifyingly clever and unreal before the situation was clear.

She remembered that the discussion about time and atomic clocks was not over yet, but was interrupted by Aoki's question. She wanted to continue the question, so she asked:

"Mr. Situ, you just said that you first created a real-life dream to achieve the synchronization of the dream and reality, and then created a cesium atomic clock in the dream to keep time, but you can't always carry an atomic clock in your consciousness all day long and put yourself in a sleepwalking state, right?"

"Don't be that troublesome." "I can roughly measure the time between this place and our world by simply connecting the real scene on the island to the dream world and then determining the cycle of regular events that occur in the surrounding environment, such as the interval between two tides." ”

Su Huilan remembered the change of the giant moon she experienced before, and said: "The tide is caused by the gravitational pull of the moon, and the instability of this space shows that it may move between the earth and the moon, which obviously causes the tide to change, and how can the time be estimated through the tide?" ”

Situ said: "So one test is not enough, once you find that the environment has changed, you have to test again." However, there is one thing you may not have noticed, the instability of this space does not change at a uniform rate, it is stable most of the time, otherwise there would be no civilization on the island, but unfortunately the tribal civilization here was destroyed in the disaster caused by the spatial change. ”

"And how much time has it been since you measured it?"

"It's been almost a year."

"It's been almost a year?" Alice, who was already full, wiped the oil from her mouth with her hand, and then shook her head in disbelief, "I don't understand what you said about atomic clocks, and I really can't remember how many days and nights have passed, but I know how many meals I've eaten, we have little food, if a year passes, then I must be a ghost now, not a person!" ”

The crow nodded in agreement: "Quack, the crow is starving!" Hungry crows! ”

Situ glanced at the crow with interest, and the crow looked at him unnaturally and turned his head: "Okay, okay, don't talk about it, you guys talk!" I'll just eat meat......"

Su Huilan thought for a moment and said, "I had guessed that this was a Klein bottle, and I discussed this with Aoki many times, and many things that happened confirmed that my guess might be right.

You and Mrs. Larry entered the space at the same time, but on different islands. According to you, almost a year has passed, and Alice only feels like a few days, which clearly doesn't seem like something happening in the same plane. Your atomic clock is accurate, but the body's metabolism and biological clock don't fool her either.

Although the Klein bottle contains part of the four-dimensional space, it is generally closed, and any position on the bottle body is connected to each other. Could it be that we were once in the same space, but at different times? ”

Situ nodded and said, "Professor Su, your conjecture is very correct, this can be completely understood as a Klein bottle, but you ignored one point, the Klein bottle does not have a fixed shape. We call it a bottle because we can only see what it looks like in a three-dimensional space-time, and a real Klein bottle can be of any shape. ”

Su Huilan pondered the deep meaning of Situ's words: "What do you mean ......?" ”

Situ reminded: "If you have to imagine, you can imagine that the bottleneck of this bottle is very long, longer than a giraffe. ”

"Giraffe?" Su Huilan looked at Situ in confusion.

Situ smiled: "A neck that grows so long that it can be measured in light years." ”

Su Huilan seemed to understand something, and suddenly said, "I know, you mean that when we are on different islands, we are in different positions on the Klein bottle, and sometimes the two are far apart...... Light-years? ”

Situ nodded: "So I also said that the atomic clock is not very meaningful, I don't use it to see the time, but to use it to reverse the position of time and space." ”

"Why?"

"Because if you're in a spaceship traveling at high speed or even at the speed of light, imagine what happens, what's the point of an atomic clock?"

"There is a clear relativistic effect when traveling at high speeds." Su Huilan remembered the giant moon she saw that day, indicating that the island was approaching the moon at a very fast speed at that time. She mentally calculated the speed of the time and the possible relativistic effects.

A flash of inspiration flashed through Aoki's mind, but he didn't think of anything.

He looked up at the clouds of nebulae in the sky, and the bright stars twinkling in between. The sky was something he had never seen before, but he had an inexplicable sense of familiarity, as if he had gazed at it countless times in the past.

Situ also raised his head to look at the sky and said, "Look at the starry sky above your head, is it familiar?" ”

Su Huilan had studied astronomy, and she suddenly exclaimed: "This ...... This is the nebula of Orion! ”

Others haven't understood yet, what's so surprising about the Orion nebula?

Su Huilan excitedly pointed to the magnificent and dazzling star clusters in the sky and shouted:

"That big bird is the Orion Nebula, which is 1,350 light-years away from Earth; The protruding swirling dark cloud is the Horsehead Nebula, which is 1,500 light-years away from Earth, and the light behind it is a cloud of hydrogen atoms ionized by stars; That red arc of aperture is Barnard's ring, and it spans 300 light-years. It is impossible to see these nebulae in the constellation Orion on Earth, and to see them so large and so clearly with the naked eye, it is necessary to advance at least three-quarters of the distance, that is, ......"

Su Huilan's heart was pounding, her voice was a little trembling and uncertain, "We are now on the cantilever of Orion 1,000 light-years away from Earth?!" ”