Sometimes, Lin Yu was very curious about what the relationship between the heavens and the ten thousand worlds was? Why did the earth develop into a technological civilization? How did she end up in the Netherworld after she died?

It's just that her cultivation is too low after all, and she can't go deep into the secrets of the heavens and worlds, and all she knows is some things that she hears.

In the netherworld, the Aoba Dao people said that the heavens and all worlds are immortal civilizations, and there are other civilizations outside the territory, and there are conflicts between civilizations. When he was on Qianling Island, He Qingyun said that many great supernatural beings traveled in the starry sky and occupied many planets, which together formed the heavens and all worlds.

At first glance, it may not seem to be related, just a description of the heavens and all the worlds, but in reality it is subtly different.

According to the Aoba Taoist people, the heavens and all worlds are one civilization, and they are one, and they work together against other civilizations. But according to what her master said, the heavens and all worlds are more like an alliance, and each great supernatural is a force, and then you occupy a piece of territory, and I occupy a piece of territory, and finally form a big alliance together.

And regardless of whether the heavens and worlds are a civilization or a grand alliance, the relationship between the worlds should be quite close.

However, judging from what Lin Yu has seen and heard, the connection between the worlds does not seem to be too deep.

Just like the invasion of the Heavenly Demon in the Yellow Sand Realm, the war between the two sides was protracted, but because the void was blocked, no one could ask for help, and there were no people in the other worlds who could even find the abnormality, and the reason for this could be guessed without much thought, it must be that there are not many contacts on weekdays, and no one is surprised if they don't contact each other for a while.

'The Yellow Sand Realm is a part of the Heavens and Ten Thousand Worlds, but it is not closely related to the other worlds, after encountering the invasion of the Heavenly Demons, the cultivation realm is close to total annihilation, and after the disaster, there is a thing like Heaven-shaking Thunder, which is mixed with physical characteristics and is not completely immortal. ’

Lin Yu looked at the Heaven Shaking Thunder refining method that Chen Zhixian came up with, and wandered out of the sky, breaking through the sky with his brain.

'The earth obviously has a cultivation inheritance, and there are also myths and legends such as the Three Realms, the Heavens, and the Three Thousand Worlds, which should belong to the immortal civilization that owns the heavens and ten thousand worlds, but somehow, the cultivation path was cut off, and explosives also appeared in history, and gradually developed into an extraterritorial technological civilization similar to that mentioned by the Aoba Dao people. ’

'So, is it possible that the earth was once part of the heavens and all worlds, but it was even more distant from the relationship between the Yellow Sand Realm and other worlds, and in an unknown era, there was a disaster, but there was no such thing as the Yellow Sand Realm, where there were many wonderful gates to issue missions and carry out rescues, so the cultivation world gradually declined, and only then did science and technology develop? ’

"Little friend?"

Lin Yu diverged his thinking, and had already made up the great world of cultivation and the vigorous catastrophe that might have appeared on the earth, and then he heard Chen Zhixian's shout, woke up in shock, and remembered that he was still talking to the other party.

Her face couldn't help but feel a little hot, and she realized that her imagination was too fascinating, it was just a refining method of earth-shaking thunder, but it reminded her of a long story.

"But..."Lin Yu looked down at what was written on the paper, the materials needed for the refining of the Heaven-Shaking Thunder, although the names were different, he could guess that they should be somewhat similar to the materials needed for explosives, but there were more steps for the monks to carve the true qi of the talisman when making it.

She felt that her conjecture was not entirely wrong.

"Forget it, if you don't have enough strength, you can't even go back to the earth, what's the use of thinking so much." ’

Lin Yu shook his head and put aside his cranky thoughts, thinking back to what he knew about the development path of explosives, and combined with the abilities that cultivators possessed that were different from technology, he put forward his own ideas.

Chen Zhixian either pondered, or nodded, listening with relish, Lin Yu's suggestion was indeed reasonable in his opinion, and it was worth experimenting.

Because Chen Zhixian was in a hurry to leave last time, after returning to Li County, he was busy arranging the people of Pingluo Town, and he hadn't gone to transcribe the exercises that he had originally said, and since Lin Yu came this time, after finishing his suggestion, he simply told Chen Zhixian about the three points of return to vitality and asked him to write it down.

"I'll also tell Xiaoyou about the Pure Heart Technique, and when Xiaoyou goes back, it can just be passed on to the current cultivators in Bingli Town."

After a few things were done, Lin Yu then said goodbye and left, and returned to Bingli Town.

After going back, Lin Yu called Qin Run and Li Sheng, passed on the Qingxin technique to a few people, and asked the four of them to come back to her three days later. After that, he instructed everyone every day and waited to return to the Thousand Moon Realm.

Three days later, in Lin Yu's residence, Qin Run, Li Sheng, Sun Jinghui and Li Pingyun came to answer her words, but found that no one was in the house at all, and thought that the envoy had something to do, but they waited left and right, and did not wait for the envoy to come back.

Strangely, Li Sheng skimmed to the bed and seemed to have a folded piece of paper.

……

It was still a void that couldn't tell the difference between up and down, left and right, and all kinds of halos were circulating, and Lin Yu was on his way home.

When you come, you need to divide the monks to different regions of the Yellow Sand Realm, and you also need to pass on the reward - 'Tianxian preaching for a day', so naturally you go to the Tianxian Cave first, but when you leave, you don't have to do this, you just go back to your own home.

The task was done, and a group of apprentices were handed over, and after nearly two months of getting along, she also had some feelings, but she didn't want to show parting sadness like ordinary people, so she simply left a letter to explain to a few people, and then directly started the token and left.

In the midst of the various colors of light, Lin Yu closed her eyes and recuperated, and after I don't know how long, the white light passed through her eyelids, and in a trance, she felt that a portal seemed to appear in front of her.

Then she felt as if she had crossed a certain line, and she felt real under her feet.

Lin Yu opened his eyes, looked at the familiar courtyard, and let out a long breath: "Qianling Island, I'm back. ’

Originally, the Qianyue Realm was also another world for Lin Yu, but after she stayed in the Yellow Sand Realm for nearly two months, she felt that Qianling Island was so kind, at least there was her master, eh, although she left temporarily, there were still senior brothers and sisters in the same door, and Xiao Meow, whose relationship had improved after getting along.

Unlike in Bingli Town, everything was unfamiliar when he first arrived, and he was not very familiar with everyone, and he was repeatedly tempted by Qin Liyuan, intriguing with him, and then after several twists and turns, he fought with the devil.

Although a group of people have been taught, that kind of relationship is more like to go to a certain university as an instructor, and if you get along well, there is a feeling, but it certainly can't be very deep.

"It's better to be at home." Lin Yu felt that everything he watched was kind, and he couldn't help but sigh.

"Hey, Lin Yu, you're out of the customs, what's good at home and good outside?" Little Meow jumped off the wall and walked over with catwalks.

Lin Yu hugged Xiao Meow and his front paws: "It's nothing, I've been in retreat for a long time, and I'm just bored." "She feels so cute about Meow now.

"Cut, who is to blame, you are only practicing the Qi realm, why are you in retreat? Just have fun and practice slowly. You don't know that there are a lot of people in the city during this time, and it's much more interesting than before, and there are even a lot more people buying snacks on the street. ”

Lin Yu rolled his eyes, the last sentence is the point, where do you care about anything else except food. However, many people came to make her have some bad conjectures.

Xiao Meow said and sniffed his nose: "Why does it smell weird on your body, did you go somewhere else just now?" ”

Lin Yu's heart jumped, and he secretly complained that Xiao Meow's nose was too smart, but his face was not in a hurry, and he changed the topic: "Where am I somewhere else, I just came out of the green jade bowl." By the way, you said there were a lot of people in the city? Do you know who it is? ”