Time travel is a thing that is not to be joked about.

It's not as simple as Nana waving her hand and everything is fine.

In particular, Lu Yuan's time travel also includes "multi-dimensional and multi-world parallel time flow rates are different", "start time travel to world C for the goal of world B in world A", and the ancient proposition of "what will happen if you go back to the past and change history" - it can be said that most of the problems of time travel are in one - so this time travel journey itself is also one of the key scientific research topics of the Dawn.

Now Lu Yuan has been able to prove that a small change in history can only be overshadowed by the subsequent torrent of time - just as there really is some kind of "corrective power of history", the "changed history" is erased by a long period of time; However, when the magnitude of changing history exceeds the limit of the corrective force, history enters another fork in the road, parting ways with the original history -- such as Shushan, a world that has been greatly changed by Lu Yuan.

Yuqing flew to the heavenly realm and was destined to be impossible to reincarnate as Li Ling; Long eyebrows never left, and went one step further; Although the tide of Heaven and Earth Yuan Qi is still decreasing, it will not be completely cut off for hundreds of years this time; In addition, the change of dynasties, the rise of the East and the adoption of a different system in China, etc...... History has gone in the other direction! Under the wheel of this kind of history, it is difficult to say whether there will be a project manager named Lu Yuan in the future.

Only on the timeline where he came, Lu Yuan's existence was certain.

Of course, Lu Yuan also had some things that he couldn't know. Because the "world system" built by the main god is super complex, it is full of puzzles that even the main god himself has not studied thoroughly. Lu Yuan adheres to his fair concept of "contribute more and take less", he not only makes the future of this world better, but also gives up most of the spiritual power he carries into the world. His contribution should be unknown to anyone, and he should be an unsung hero.

But in reality, the "world" itself is known. As a kind feedback, it can be said that Lu Yuan will inevitably be born in the future. And under the world's kind attention, it is difficult for him to force hard all his life...... is not the protagonist, the rich second generation who is smooth sailing losers, pretending to be forced, and slapping his face all day long, can't even get a supporting role in this book. So…… Let's ignore him and move on to the topic of time travel.

As the saying goes, "those who travel a hundred miles are half ninety" -- Lu Yuan has passed through three worlds one after another, and all of them have successfully achieved the set goal -- it can be said that he has completed 99 percent of the entire plan, and he is about to return to this last step! At this time, of course, everything is based on stability, don't toss any more moths.

Therefore, after the calculation of the Dawn, the return route set for Lu Yuan is the most secure: "return the same way".

In other words, he had to return to the "Fairy Sword World" from the "Shushan World", and then from the "Fairy Sword World" to the "Time and Space where Lu Yuan is located", and the last step was to return to the Dawn. Although troublesome, the logic is the clearest...... And by the way, you can also verify a few "small" topics (Kexue language). Well, a very small subject, it will definitely not kill people!

…… Probably.

So after Lu Yuan had been away for an unknown number of years, he actually returned to the world of fairy swords.

……

The Six Realms are still the Six Realms, but Lu Yuan's vision has moved away from the category of "seeing mountains is mountains", and he can overlook the world from a higher level. In his eyes, the Six Realms turned into six hollow balls wrapped in solid walls. The human world and the fairy world are goose yellow dotted with emerald green, the god world is golden, the demon world is gray and white, the ghost world is completely black, and the demon world is ...... It is colorless. A huge and friendless sacred tree with lush branches connects the Six Realms, and this is the Six Realms of the Fairy Sword.

Although the Six Realms are between virtual and real, you have me, and I reflect you, and it seems that the structure is very mysterious.

But for Lu Yuan, who had already seen the thirty-three days of the main world, and every day was a vast and boundless scene, he could already feel the cramped meaning of seeing the Six Realms of the Immortal Sword again. The Six Realms are too small...... Like a work without confidence, she forgoes the possibility of expanding the world infinitely, carefully sets the boundaries, and then forms small but precise loops within it—a practice of a master god rather than a world built by ambition.

You know, even the "Mass Effect World" built by a catalyst to verify an idea is the size of a galaxy! And the history is complete. Once the initialization is successful, the world will also draw energy from the source sea and begin to grow wildly. It can be expected that in the near future, the world of Mass Effect will evolve into a complete universe.

Lao Lu deliberately expressed nostalgia for the past, just to stay in the void world for a long time. It's a pity that he still has to deal with an extremely real problem in the end - he still has to meet his little apprentice Zhao Ling'er......

Because the speed of time in the two worlds is not equal, Lu Yuan really can't calculate what era the Fairy Sword has come? But the time will definitely not be short--maybe the five fairy swords will come out--after all, he finally fought with Changmei, and he fought for hundreds of years! But according to his prediction, Zhao Ling'er was talented, and it wouldn't take too long to learn the sword "Trace of Heaven" that shattered the void, maybe before the age of twenty-five.

Thinking that after Zhao Ling'er shattered the void, he didn't find the master who ran away. Unable to find it, he had to return to the fairy sword world alone, and since then he has lived alone (huh?). Why this setting?! You beast! ）…… Lao Lu's hands are trembling! He was very afraid of seeing the white-haired Zhao Linger, but he was even more afraid of seeing Zhao Linger's gray-haired eyes, but he still did not change his original intention!

That would make him ashamed of himself.

But he knew that Zhao Linger's strongest attribute was "stubbornness"! As long as she recognizes something, whether it is going to the dark or to death, she will never look back. Sure enough, do you have to fill the pit you dug with tears?

"Forget it, it's a big deal to get beaten." Old Lu smiled wryly, "It's not that I haven't been beaten by apprentices...... "What about your self-esteem."

Lu Yuan sorted out his mood and mustered up the courage to step towards the human world.

But at this moment, the wall of the world in the human world suddenly lit up with a cloud of white light. Immediately, the figure of a hundred-foot tall human head and snake body slowly emerged from the human realm and stopped in front of Lu Yuan.

"Nuwa? Have you recovered? "I didn't expect to be an acquaintance, this is also a foreign acquaintance. As for the little grudge with Nuwa before, he had long forgotten it. Therefore, Lu Yuan stopped and asked with interest.

"You're asking me? That one...... I haven't fully recovered yet, it's just that I thought something wrong before...... Wait, why am I telling you this? How did you get back? "The current Nuwa Niangniang is obviously no longer the original resentment projection, but one of the real Three Ancient Emperors. However, she looked panicked before, and now she was even more confused by Lu Yuan's strange soldier problem.

After all, the last time we met, it was still a relationship of shouting and killing - you suddenly greeted me like a friend, and I still need a process of acceptance!

"That...... Have you eaten? Nuwa finally said something nonsensical, and then both of them fell into an awkward silence.

"I've got a step ahead of time, I'll see you later." Seeing that the embarrassment was going to continue, Lu Yuan simply chose to leave. "Wait," Nuwa hurriedly called out to him and stopped in front of him again.

Lu Yuan didn't speak again, he looked at Nuwa Niangniang, but the smile was withdrawn from his face a little bit, and his eyes suddenly sharpened! Forced to look at Lu Yuan, Nuwa Niangniang staggered her gaze in a panic, not daring to look at Lu Yuan. In her heart, there was a small human-headed snake body rolling around with her head, "Why should I come out?" Why did you come out?! He's so scared! It's a pity that although she was extremely scared in her heart, her body still bravely blocked Lu Yuan and prevented him from entering the human world.

Nuwa was the god who knew Lu Yuan's strength best back then - you must know that when she was fighting, Lu Yuan's strength was also projected between her and her, but her combat effectiveness was off the charts! How do you know that when you see you again this time, not only can you not see the depth when facing Lu Yuan, but you can't even breathe! As for being scared and stiff, and the snake's tail trembling in her skirt, only she knows!

In fact, Nuwa Niangniang didn't understand, because of the limit of the world, Nuwa Nuwa in the Shushan world could become a saint, but she could only be one of the three emperors and the ancestor of the human race in this fairy sword world. And when Lu Yuan left the Shushan world, Ren Shou, the real person of Changmei, had already become holy! Become the first saint born in the world after the departure of all saints!

And Lu Yuan's strength is almost equal to Changmei, and his perception of the rules of the world is even higher than Changmei! It's just that he didn't want to be bound to the Shushan world, so he suppressed the opportunity to be canonized and chose to turn around and leave.

Seeing that Nuwa was almost fainting under his weight, Lu Yuan suddenly smiled lightly, but his eyes were as cold as iron. "It seems that something happened to my little apprentice, and you are afraid that I will destroy the human world in a fit of anger? Hehe~"

He spoke softly, but Nuwa felt like a mountain pressing down on the sea, and it was extremely terrifying. The laugh at the end, which was not smiling, was even more heartbreaking. (To be continued.) )