"It will not affect the present, but it will affect the past!" Xiao Yu said with a smile.

"What does it mean?" Wu Qi asked.

"It's very simple. After I go back to the past, I change the past, and then the past continues to move forward with my changes, but these changes will not enter our timeline.

In other words, at the time node where I intervened, two time lines appeared in the past, one leading to our side. There was no record of my existence on this time line.

And the past I went back to was played out on another timeline that was divided, and there was a record of my return on that timeline."

After saying this, Xiao Yu's doubts were revealed. He finally understood why he was killed by Su Xiaoxing in the past, but he was not dead now.

Because his death exists on another timeline, and there has been no change in the past on this timeline, he still grew up according to his original trajectory and reached the node where he left.

"What do you mean is a river of time divided into two forks at a certain time node?" Wu Qi asked.

"It's almost the same, but not exactly the same." Xiao Yu pondered the words, "After an ordinary river fork, the river water flowing into each fork will decrease. But the timeline is different. After it is divided into two, everything in the original timeline has not changed at all, but the other one has changed!

It becomes two parallel worlds, two worlds have the same original source, just on one node, divided into two."

Xiao Yu also understood in his heart. The timeline he is currently in is actually separated from another timeline.

Xiao Yu on that timeline returned to the moment two years ago and divided this timeline.

When Xiao Yu returned to the moment two years ago, he also divided a timeline. But whether things on that timeline will run like this world? It depends entirely on how Su Xiaoxing on that timeline reacted.

If Su Xiaoxing was extremely angry and killed Xiao Yu directly, a completely different parallel world would be born.

Thinking of this, Xiao Yu's heart suddenly felt a sudden stern. It seemed that before he became Shadow No. 2, he could not return to the past at will, otherwise he would only create timelines to make things more complicated.

"There is a problem for you to say this!" Wu Qi said. "According to what you said, if Ying 2 does not return to the past, it will not have an impact on the present, but will produce a brand new timeline. In other words, when you return to the moment you go back to the past, you will immediately create a new timeline out of thin air.

This makes no sense in theory. At least, it violates the law of conservation of energy, and a world appears out of thin air. There is another you, me and him out of thin air. There is an additional reincarnation plate out of thin air...

It is equivalent to a big river flowing eastward. Suddenly, it divided into a fork, but the flowing water in the original river did not decrease at all.

In this case, it would be like a flow of water from the river that has an extra fork out of thin air.

Then the question is, how did this extra stream appear?"

Wu Qi's words stunned Xiao Yu. This was indeed an unimaginable question. Xiao Yu thought for a while and replied: "If we look at the river, this problem does exist. Is the law of conservation of energy? But on the timeline, the law of conservation of energy may not apply?"

Wu Qi thought about it, then suddenly laughed and said, "Okay, I don't understand these headaches. In the future, you can explore and discover it yourself!"

Xiao Yu nodded and suddenly remembered something again. In fact, even if there was no Ying Er, he would not be as simple as returning to the past.

It still has an impact on the current world, but it does not affect the past.

Because Xiao Yu returned to the past, did a lot of things, and saw a lot of things. When Xiao Yu came back, he still remembered these things. So it actually changed the operation of the world because Xiao Yu changed himself.

What it changes is what happens after the time node of Yingyi, not before. So what it changes is what happens after the present, not the past.

But if there is Shadow No. 2, it will change the things before the time node where Shadow No. 1 is located. It will change the past.

Therefore, Wu Qi's also makes sense. Without Ying Er, you cannot change the past.

Changing the future is actually very simple. As long as everyone works hard, they can change their future.

However, this change is irreparable from the future in the present and the regrets of the past.

What Shadow Killing Technique gives Xiao Yu is to change the past and make up for the mistakes he made in the past and the regrets he caused, and this will also indirectly change the present and the future. This is the power of Shadow Killing Technique.

Shaking his head, Xiao Yu temporarily brought these boring theories out of his mind and began to ask what he was most concerned about: "Grandpa, after talking for a long time, he has not yet said how to practice this shadow killing technique and how to operate the reincarnation plate?"

"I really don't know how to practice shadow killing techniques." Wu Qi smiled, "But don't worry either.

Any cultivation of any ability is traceable and has its own cultivation techniques.

Similarly, Shadow Killing Technique also has its own practice formula, and the Reincarnation Plate also has an operating instructions.

The practice formula of Shadow Killing Technique is called the Reincarnation Art. The Reincarnation Art is divided into three volumes: present, past and future.

In the past, the Reincarnation Art was held by the descendants of the Reincarnation Gate, but they did not know what the Reincarnation Art was, but they were just used as a token.

But later, after years of research, I finally discovered the true face of the Reincarnation Art.

In fact, the Reincarnation Art is already by your side, but you can't find the trick to open them for the time being."

The three words "Reincarnation Art" reminded Xiao Yu of Su Xiaoxing's jade pendant, which seemed to be called "Reincarnation Art".

And Wu Xiaozhu and Wu Xiaoyu also have the same jade pendant.

Seeing Xiao Yu's eyes looking at Wu Xiaoyu and Wu Xiaozhu, Wu Qi nodded and said with a smile: "Yes, the content of the Reincarnation Art is hidden among the three jade pendants.

In my early years, I handed these three jade pendants to Azhu and Yu Axing for safekeeping. So, the Reincarnation Art is actually right next to you!"

Xiao Yu immediately said with some surprise when he heard this: "In this way, can I practice shadow killing techniques now?"

"It's a pity, it's not possible!" Wu Qi shook his head and sighed, "The content of the Reincarnation Art is in the jade pendant, but only in a special way can you open the jade pendant and get the Reincarnation Art.
Chapter completed!