There is a time limit for the first flight of a flight student, and it is not as long as the fuel pipe is enough, and you can fly wherever you want, just like a regular pilot on a mission.

"Watch the time and prepare to return." The instructor reminded in a deep voice. Yang Liu's instructor is a middle-aged handsome uncle with thousands of flight experience, and has participated in a confrontation with a certain country's aircraft and won a big victory.

Strictly following the operating procedures, Yang Liu carefully controlled the throttle valve, made a beautiful turn above the clouds, and then maintained formation with Long Yu and entered the cruising state.

"Liu Liu's swooping just now was very unpleasant, and it was still far from the sea! The cruise ship below couldn't read the plane numbers of the two of us at all. Long Yu's voice suddenly came over the radio.

Yang Liu was about to answer, when the instructor suddenly ordered sternly: "Don't gossip in the public channel, otherwise the corresponding points of your flight results will be deducted according to the regulations." ”

Long Yu was so frightened that he didn't dare to speak anymore, but his coach stopped and fought back in a weird way on the radio: "Eagle, you guys want to be the chief, are you crazy?" It seems that my students are not yet in your turn to discipline. ”

"Waterfowl, you guy knows how to protect the short, you must know that you are harming the students by doing this. The more female students are, the stricter they should be, after all, good seedlings are hard to find. Although Yang Liu's instructor is old-fashioned, he is not unfamiliar with the world, and what he says is also very reasonable.

"If you want to say that we are good seedlings, we are each other, and the two little girls are very competitive. You must know that both of them are public figures, and it is already worth encouraging to be able to calm down and complete the training task to the letter, so there is no need to be so serious! The waterfowl replied over the radio.

Relatively speaking, the landing of the plane is more dangerous than taking off, and if the control is not good, it may not even have a chance to eject and escape. When Yang Liu drove the training plane to land, although the eagle pinched a handful of sweat, he did not rashly interfere with Yang Liu's operation. Yang Liu really did not disappoint the instructor, the landing action is very standard, the moment the front landing gear touches the ground, the vibration is very slight, the whole landing process can be described as one go, perfect.

Long Yu, who then landed on the plane, was not far behind, after all, everyone could use their divine sense to observe the flight attitude of the plane in all directions, as well as the height and angle from the ground, and it was very difficult to fail to fall.

It wasn't until all the flight cadets successfully landed in the plane one after another that the squadron leader's hanging heart was put into his stomach. When all the trainees followed the instructor off the plane and handed over the plane to the ground staff, they were so excited that they forgot to wait for the leader's lecture.

Fortunately, at this time, the squadron leader was able to understand the feelings of the trainees, and had enough patience to wait for these young eagles to vent their excitement and vitality.

Lu Ya'er and Xiao Mingyue, who were also in a state of flight, were not excited at all, looking at the unchanged scenery around them, anyone would think that the sisters were in a static state, rather than flying towards an arm of the Tianhe Galaxy at an ultra-high speed close to the speed of light.

Although the density of stars in the central part of the Tianhe galaxy greatly exceeds that of the outer spiral arms, the distance between the stars is still several light-years away, and it is not possible to reach them in a short time.

In fact, in the entire galaxy, the huge empty space between the stars is not a vacuum where there is nothing, there is something that is omnipresent, and that is the legendary dark matter. Lu Yaer and Xiao Mingyue learned from the textbook of the blue mother star that the so-called dark matter is actually a series of inert particles, which do not participate in electromagnetic reactions, and are extremely small, and it is difficult to collide with any other particles even when crossing the entire earth, so it is difficult for people to observe the existence of dark matter.

However, the meaning of the existence of dark matter is not proportionate, and even without the existence of dark matter, the universe would be unrecognizable. Dark matter is the basis for the existence of huge galaxies like the Tianhe Galaxy, which is like the slime in gruel, attracting stars like grains of rice around the central black hole. Without dark matter, it would have been difficult for the Big Bang to form large-scale galaxies, and then there would have been no habitable existence like the solar system.

"Xiao Mingyue, did you say that the aura of heaven and earth that we are trying to absorb is also a kind of dark matter, otherwise how could people not feel their existence? Even monks like us can only absorb and use it, but we can't keep it and take it away. I once tried to put some heaven and earth aura into storage gear, and it didn't take long to find that they had disappeared without a trace. Could it be that even the secondary space can't trap the flow of heaven and earth aura? In boredom, Lu Ya'er couldn't help but think about some issues that she didn't usually pay much attention to, so that Xiao Mingyue could discuss them.

"Huh!" Xiao Mingyue blinked her eyes, her expression was very innocent.

"Since the aura can flow from this space to the main space and pass through the spatial barrier, then they must have the ability to jump in space. If we use our free time to concentrate on carefully studying the attributes of heaven and earth aura, we may be able to help comprehend the spatial folding jump. ”

"Huh!"

"Okay, then let's do a little bit of real things first, let me first compress and liquefy some heaven and earth spiritual qi into the storage equipment, and then carefully observe where they escaped from, whether they returned to the space we are in now, or escaped through the space barrier to other main planes?"

While speaking, Lu Ya'er cast a spell to condense a large mass of heaven and earth aura into a small drop of incomparably precious spiritual liquid and put it into the storage ring, and used her divine sense to observe the changes of this drop of spiritual liquid in the storage space at all times.

Consuming mana to condense the spiritual liquid like Lu Ya'er is not worth the loss, because the energy rich in this drop of spiritual liquid is not enough to compensate for the mana consumed, so ordinary monks will not do this.

After a period of careful observation, Lu Ya'er found that this drop of spiritual liquid quickly vaporized in the storage space, spreading to all corners of the entire subspace, and then... Then it was gone, and all the heaven and earth aura scattered in all corners disappeared slowly and inexplicably, and it didn't even appear outside the storage equipment, completely disappearing without a trace. For this result, Xiao Mingyue said hehe!

After doing it again, Lu Ya'er involuntarily entered a meditative state, subconsciously closing her five senses and cutting off all contact with the outside world. Then Xiao Mingyue naturally entered a state of alert and protected the Dharma wholeheartedly for her sister.

Lu Ya'er's entry is three days and three nights. Of course, the time of the two sisters is relative, and for people who are slow relative to the central black hole, it may be several years. But it's amazing that no matter how the sisters' time changes relatively, it is synchronized for Yang Liu and Liu Yiyi, as if there is a very wonderful connection between them, and they can pass through many obstacles of space and time, ignoring the rules of physics.

But for Lu Ya'er, these three days and three nights are very long, and it seems to be tens of billions of years. Lu Ya'er's divine consciousness space was originally a void, and there was no substance, as if there was nothing in the entire space. But the laws of the universe do not allow for the existence of a vacuum, so at a certain moment there are small ripples on certain coordinates of space, and a pair of small elven particles that look exactly the same but have opposite properties suddenly appear in pairs, play around each other, and then hug each other, annihilating each other and disappearing without a trace.

Almost every moment such pairs of pokemon appear without warning, and then annihilate each other without warning in a very short period of time, leaving only a void. In the midst of countless repetitions, there was finally a small accident, and the annihilation of the twin elf brothers could not proceed normally, forming an earth-shattering explosion.

The explosion set off a chain reaction, with more and more elven brothers being born in the Big Bang, more and more, expanding to an unimaginable level in a very short period of time, and still expanding.

Although theoretically speaking, Lu Ya'er's divine consciousness space is infinite, but human meaning is limited, and it is impossible to track every point of change in space in a very short time, so Lu Ya'er sees all the details in her own divine consciousness space, but cannot observe the overall situation. Time passed gradually in Lu Ya'er's hard work, and it seemed to be endless.

In the end, Lu Ya'er realized that it was impossible to observe the whole picture of the explosion by looking east and west, so she immediately decisively enlarged the search range of her divine sense, and worked hard to expand her vision with the expansion of the explosion, and finally captured a trace of inspiration.

"I see!" When Lu Ya'er woke up from her meditation, the first thing she said was, I know. Looking at the surprised expression on her sister's face, Xiao Mingyue was hehe. In the past three days, Xiao Mingyue has been working tirelessly to protect her sister, although she has no physical fatigue, but there is still some mental pressure. After all, after some monks have entered a deep state of concentration, they are prone to indulge in the illusions generated by the divine consciousness, and it is difficult to extricate themselves, and eventually they are lost in the fantasy world of the divine consciousness, and they can never wake up. With the passage of time, although the monk who is lost in the space of divine consciousness will not die, his spirit lives in another world, which can be described as a walking corpse.

For example, Lu Ya'er simulated the Big Bang process in space during this transformation, and it is very likely that she will see the origin and development of galaxies, and finally even produce planets suitable for human survival and development, and then can't help but revel in it, and happily do role-playing games on this planet, and then reincarnate again in life, old age, sickness and death, and the endless cycle will continue until this universe finally dies. This process is like a computer program entering an endless loop, and it will never be able to break out of the loop without breaking a rule and starting from scratch.