Under the leadership of Zhou Anzai, Lin Yu and the others quickly arrived outside the front line camp of the Immortal Palace.

Looking from afar, what comes into view is an extremely huge city, and the defensive formation above the city is flashing a dazzling light.

Outside the city, there were densely packed armies of foreign evil tribes, surrounding the entire city.

The cultivation levels of these extraterritorial evil races are not low either, with the lowest being at the Saint Emperor level.

Behind the evil army, there are many auras that surpass the Saint Emperor realm.

"So many Saint Emperor-level foreign evil tribes! Some even have broken through the Void Realm!"

Lin Yu was shocked by the Holy Emperor's army of extraterritorial evil.

The evil tribes outside the domain include not only the Holy Emperors and Holy Kings, which are as numerous as the hairs on a cow, but also the Holy Emperors, it seems, there are quite a few of them.

"Sir, our army has actually been surrounded by the evil army for a long time. No less than fifty Holy Emperors have been sent out to report the news. Only Xu Weigong and I managed to escape."

"If you hadn't intervened, I'm afraid we would have died here!"

...

...

Zhou An was in a sad mood and sighed.

Then he continued, "The Lord of the Immortal Palace built the black hole world in order to resist the attack from the evil race outside the domain."

"Then it will allow the cultivators of the Chaos Supreme Realm to better understand the foreign evil race, so we set up a front-line camp to kill the high-end combat forces of the foreign evil race."

"But I didn't expect that the foreign evil tribe was very cunning! They deliberately created a scene of the foreign evil tribe's decline, luring our Immortal Palace army deep into the heartland of the foreign evil tribe!"

"As a result, the Lord God General was surrounded by several Void Breaking Realm warriors and was eventually injured. The Immortal Palace army evacuated overnight, but was still blocked here by the evil army from outside the domain!"

After listening to Zhou Anzai's explanation, Lin Yu couldn't help but narrow his eyes.

No wonder he felt along the way that this alien evil race was far different from the alien evil races like Kuang Xiaosheng and Mo Xiaonu, not to mention the alien evil race that killed Xuantian Saint Emperor and a group of high-end combat forces a few epochs ago.

It turned out that he wanted to annex the Immortal Palace army in one fell swoop.

This move was extremely ruthless.

"Zhou Anzai, take me into the city, I want to meet the senior general!"

Zhou An bowed and apologized, "Sir, since we fled so hastily, we haven't had time to set up a passage back to the city. Now the only way is to go in through the city gate!"

When Lin Yu heard this, his brows furrowed. It would be troublesome if he couldn't get in.

With so many evil armies from outside the domain besieging this place, it is simply wishful thinking to want to enter the city through the city gate!

I'm afraid that the two of them will be swallowed up by the boundless army of foreign evil before they even reach the city.

"Zhou Anzai, besides entering through the city gate, is there any other way?"

Lin Yu asked.

Today, this city is like an isolated island. It is basically impossible to enter through the main gate unscathed.

Zhou An looked thoughtful with a frown on his face.

After a long time, he said in surprise: "Oh, there is another way!"

Lin Yu asked: "What method?"

Zhou An said respectfully: "Another way is to build a reverse teleportation formation. Using the coordinates of the points where we escaped earlier, we can reversely deduce the coordinates of the formation in the city, and then build the formation and teleport back to the city!"

Lin Yu was also a little confused, "Is this feasible?"

Zhou An showed a trace of embarrassment, "I heard it from others, as for whether it can be realized, I have never tried it!"

Lin Yu: “…”

Zhou An continued: "However, I have an ancient book that also records this kind of reverse teleportation formation. I just think it is impossible to learn it in such a short time!"

Lin Yu's eyes suddenly lit up with hope, "Quick, take it out and let me see it!"

Zhou An quickly took out the tattered ancient book from his storage bag and said, "This is it!"

Lin Yu took it and looked at it, and immediately a look of doubt appeared in his eyes.

However, he still suppressed his doubts and opened the book, only to see a series of extremely sexy illustrations.

"Fuck, Zhou Anzai, do you still like to watch this kind of thing?"

Zhou An said: "That's right, I am also very diligent and studious. Reading ancient books is a hobby of mine!"

Lin Yu smiled and said, "Are you sure?"

Zhou An said with a firm look: "That's for sure, I examine myself three times a day!"

But when he set his eyes on the book in Lin Yu's hand, his smile froze and he was petrified on the spot.

Damn, I got the wrong one...

The next moment, Zhou An's face turned red, he was extremely embarrassed, and he hurriedly took it back from Lin Yu.

Then he took out another one and explained hastily, "Sir, this is the one. The one just now was left here by my friend. It has nothing to do with me!"

Lin Yu showed a meaningful smile and said, "Oh? Friends, haha, Elder Zhou's friend is quite elegant, hahaha!"

Zhou An's neck was red, his head was lowered, and he was too embarrassed to look up at Lin Yu.

Lin Yu laughed and stopped teasing Zhou Anzai.

Instead, he carefully flipped through the ancient book in his hand.

"A complete collection of ancient and modern formations!"

"Reverse teleportation array!"

After flipping through a few pages, Lin Yu found the method of constructing the reverse teleportation array.

What is recorded in the book is indeed just as Zhou An said, using the original coordinate points to construct a formation and conduct reverse teleportation.

"It doesn't seem that difficult!"

Lin Yu quickly memorized the method of constructing a reverse teleportation formation.

Then we started preparing to build a demonstration.

Zhou An asked in confusion: "Sir, you learned it so quickly?"

Lin Yu smiled and said, "Probably. We'll know after trying it!"

After saying that.

Lin Yu then began to try to construct a normal teleportation formation, and he and Zhou An were teleported a hundred miles away.

Lin Yu found the coordinate point again, and then began to construct a reverse teleportation formation.

Zhou An was watching Lin Yu's operation in amazement.

This smooth and skillful technique made it seem as if this formation had been constructed countless times.

The spiritual thread flows and the runes condense.

A reverse teleportation formation.

With Lin Yu's quick construction, it successfully appeared in front of the two of them.

"Sir, you are truly a demon-level character!"

Zhou An said in amazement.

It has only been such a short time, but Lin Yu has actually learned this formation.

Even the formation master of the Immortal Palace does not have such a level of talent!

After a while, Lin Yu clapped his hands and looked at the reverse teleportation formation in front of him with satisfaction.

"It's done, now let's try the effect!~"

That’s all.

As soon as he stepped into the formation, Zhou Anzai hurriedly followed.

A flash of white light passed by.

The two appeared again at the place where they were initially teleported.

"It looks like there's no problem!"

Lin Yu smiled.

…