So, Zang Feng thought for a while, and finally found that something seemed wrong, so he asked: "The disciple listened to the explanation of the Frost Girl, and according to this explanation, the arbitrary gate that is also used as a medium for crossing is also similar to this ancient divine flower, the principle of crossing, and how to deal with it?"

Frost replied briefly, "Of course!"

Zang Feng asked again: "However, for any door, one side of the door is the present, and the other side of the door is the past or future of other places, how can there be no such root system space-time pipelines that spread everywhere and are complex to connect the two sides of the door?"

Hearing this, Frost immediately replied with some impatience: "Although there is no space-time pipeline to connect them, there are time tunnels to connect each other!"

At this moment, Frost immediately threw the concept of a time tunnel to Zang Feng, and Zang Feng was instantly stunned again. Zang Feng had no choice but to ask again: "That...... So what's a time tunnel?"

Frost said: "This is actually very understandable! Because the space-time pipeline is a kind of space-time tunnel. ”

Zang Feng listened to this, and asked again: "Ah! The space-time pipeline composed of the roots of the ancient god flower was originally also called the time tunnel?"

Zang Feng said: "However, the space-time pipeline composed of the root system spreading everywhere seems to be different from the time tunnel in the arbitrary door!"

Frost replied: "Actually, there is no qualitative difference! It's just that this kind of time tunnel composed of the roots of the divine flower can be seen and touched, and it is tangible and qualitative. Therefore, they are nothing more than a kind of time tunnel that can be seen and touched! And any door, since it can be traversed, must also have a time tunnel! Otherwise, how can it be traversed?

"It's just that this kind of time tunnel in any gate is more complicated than these time-time pipelines composed of tangible and qualitative roots, which are meandering! Therefore, in any door, there is a qualitative but invisible time tunnel, which is naturally more complex and abstract, and therefore difficult to understand!"

Zang Feng listened to Bingshuang's explanation, and immediately fainted again, and after thinking hard, he finally felt that he vaguely understood a leather hat, so Zang Feng said again: "Oh! It's just that the disciple still doesn't quite understand." Frost Girl, can you give an intuitive example of this extremely abstract, invisible and intangible, space-time tunnel as before?"

When Bingshuang heard this, he was really helpless about Zang Feng's inquiring attitude. So, she raised her head first, and looked at the local battle situation in the sky of the 'Medicine Immortal Valley' at this time through the crystal on the top wall of this secret room. Then, Frost's gaze shifted to the table in front of him, carefully staring at the detailed map of the four continents tiled on the table. After observing for a while, she saw that the seven-colored shadow man was still in the 'Medicine Immortal Valley', hiding his traces and scurrying around, as if he didn't know what he was looking for, but after all, he had not yet joined the battle of the Flying Knife Warrior attacking the 'Medicine Immortal Valley'.

Therefore, because of Bingshuang's brief observation of this landscape painting, he had a general understanding of the overall battle situation of the 'Medicine Immortal Valley' at this moment, and knew that the 'Medicine Immortal Valley' Qimen Dunjia and the indiscriminate bombardment of the flying knife and others could still be supported for the time being. So Frost came back to his senses and continued to follow Zang Feng's question: "Okay! Since you asked me to give you an example, then I will ask you as before, you have heard of that arbitrary door before, presumably, you must have heard of the time machine too, right? And the time machine is the machine that opens the time tunnel! You don't understand the time tunnel, and for the legendary time machine, you understand it, it's not abstract, it's intuitive enough, right?"

When Zang Feng heard this, he suddenly remembered something and said: "Ah! The disciple seems to have remembered! The legendary time machine, like a drawer, opened the drawer, got into the drawer, and entered a spiral tunnel. Sit on the time express in the tunnel, travel along the spiral whirlpool, and you can reach the time and space you want to go!"

Bing Shuang said: "Yes! The spiral vortex in the drawer is the time tunnel! Therefore, when people shuttle in the time vortex tunnel in the time machine, they will be the same as the dust beads in the space-time pipeline of the root system of the ancient god flower!

At this moment, Zang Feng finally felt as if he had understood some of the fur, but whether it was correct or not was still uncertain, so he asked Frost again: "That is to say, that time tunnel is similar to the root system of the Divine Flower that spreads everywhere and can be seen and touched, but it is qualitatively intangible, invisible and intangible." But in any of those doors, there are also such root tunnels that resemble a large number of spreads? It's just that they are completely invisible and intangible. And it's all integrated into a single door panel?"

Bingshuang listened to Zang Feng's understanding, so he had no choice but to say, "I'm really speechless. But that's fine if you want to understand it that way, because, by and large, it's not wrong!"

Zang Feng listened to Bingshuang's affirmative answer, and said as if he had been rewarded: "Ah! I see! That disciple seems to really understand this time tunnel this time!"

Frost listened, but said, "I've been explaining to you this time tunnel and the time travel for so long. Now, even if you don't understand, I won't explain it to you!

At this time, Zang Feng knew that it was impossible to let Bingshuang explain the principle of this crossing for him. And I also know about how the golden snake sword and the dust jewels came through. So, he had no choice but to smirk at this time: "Thank you Frost Girl for giving the disciple a call! At this time, the disciple is like opening the knot in his heart, and even his breathing is much smoother! So, we might as well take advantage of this now, hurry up and take this dust bead, and I will go and fight with the seven-colored shadow man!

And Frost heard Zang Feng say this, knowing that he was no longer on the principle of crossing at this time, he continued to entangle, and he would not continue to entangle himself. But at this time, she shifted her gaze to the landscape painting scroll tiled on the table in front of her, and said, "Okay! However, let me observe this landscape painting scroll again, and take a closer look at the overall battle situation that our Medicine Immortal Valley is facing!"