Jade Collar, the news of Zhao Chang'an's return is not known for the time being, and as soon as he returned to the Jade Collar, Zhao Changan rushed to the library where Kyle was.

In less than half a month, with the employment of a large number of players, the library of Emerald Collar has begun to take shape, and it also has a collection of more than 2,000 books, all of which are written by Kyle from the books he has read in his mind.

"Your Highness, you're back"

After seeing Zhao Changan, Kyle put aside the book in his hand without hurry, and even looked at it carefully to prevent the folding of pages inside the book.

"How are the Four Horsemen of the Apocalypse? Also, what happened to the message you asked Dracula to pass on to me? Zhao Changan went straight to the point.

Kyle was not surprised at all by Zhao Changan's straightforward question, after all, it was less than an hour before Dracula left, and then Zhao Changan returned, which shows how eager Zhao Changan is.

"Your Highness, look, this is my invention" Kyle's wrinkled hand appeared a small crystal, the size of a soybean, and on the surface it seemed that nothing was discernible at all.

Zhao Changan didn't have any impatient expression, but took a closer look, and with his spiritual power, Zhao Changan quickly discovered the difference between this crystal.

It seems to have a lot of runes carved inside, and the circuits inside are so complex that it makes the scalp tingle.

"Let's talk about it, what does this thing do," Zhao Changan said after looking at it for a long time and not understanding what it was.

"Your Highness, please put it in your ears," Kyle said with a smile.

Zhao Changan did as Kyle requested, this thing is only the size of a soybean, just right to put in the ear, and it is not as hard as expected, but very soft, which can fit the ear perfectly.

Kyle didn't know where to find another identical crystal and stuffed it into his ear.

"Your Highness, can you hear me?"

"Yes," Zhao Changan said without thinking.

But the next moment, Zhao Changan keenly discovered that something was wrong!

The sound seemed to come from the crystal in his ear, and as Kyle spoke, the crystal vibrated slightly.

Zhao Changan looked surprised and said, "How far can this thing reach?!" ’

"One hundred kilometers is the farthest distance, if you want to go further, you need to replace the crystallized material, after all, this is just the most ordinary rotting rat crystal, and there is no way to carry more runes and circuits"

Kyle took out the crystal in his ear and put it in his hand and said with a smile: "Your Highness, in addition, you can also make multi-channel calls, which can be achieved by only controlling mental power, which can perfectly solve the problem of poor calls with a large number of people."

Zhao Changan also took out the small crystal in his hand and put it in his hand to play, and the ghost knows how envious Zhao Changan is of the instant communication means in the hands of the players.

Instant messaging is not uncommon in this day and age, but it is quite expensive and there is no way to popularize it, at least in this area, and it is rumored that the Federation Center has universal instant messaging technology, which is one of the reasons why the Federation can win every battle.

Instant communication means will not only bring considerable convenience in life, but especially in military affairs, if there is such a thing, then in the next war with the bloody castle, Zhao Changan has considerable confidence to win.

"How much does it cost?" Zhao Changan couldn't wait to say.

As long as the cost is not too high, even if he grits his teeth, Zhao Changan will be a person, and then popularize it on a large scale.

"Your Highness, a communicator only costs two rotten rat crystals, and it is still thanks to Your Highness."

Zhao Changan: ???

How is it thanks to yourself?

"The players under His Highness have a systematic knowledge, and I have been issuing tasks to players recently, and I have a preliminary understanding after half a month,"

"Different cultures shape different knowledge systems, if I have the opportunity, please allow me to go to the world where the player is, I hope to learn more"

When it comes to studying, the eyes of the university scholar Kyle are about to glow, and Zhao Changan can't help but slander in his heart, go to the world where the player is located? I guess it's impossible, but this communicator is really good......

"Then hurry up and try to equip all the people in the Jade Territory, the war with the Bloody Castle will start soon, I need more chances of winning" Zhao Changan's voice was cold.

"What's going on with the Four Horsemen of the Apocalypse?" Zhao Changan asked.

Hearing this, Kyle took out a sign from his hand and handed it to Zhao Changan, the brand was cold to the hand, as if to penetrate the soul, and a large number of regiments were depicted in the temple, and on the battlefield of corpses, four knights with different weapons occupied in different directions.

"The Four Knights of the Apocalypse have preliminarily established their respective knights, waiting for His Highness's orders at any time, this nameplate is the evidence, as long as the nameplate is passed, His Highness can communicate with the Four Knights of the Apocalypse at any time"

"In addition, the four knights hope that His Highness can divide a place of death for them as soon as possible to live and train."

Zhao Changan was a little embarrassed for a while, everything else is easy to say, but this place of death is really a little difficult Zhao Changan, the place of death, as the name suggests, is a very special place, a large number of living beings did not die in the later stage of death, and finally became a resentful spirit, under the erosion of perennial death, the land of death was finally formed.

If you don't say that the Four Horsemen of the Apocalypse are wonderful, don't want a good Void Dimension, you have to be a place of death, it's really amazing.

"Your Highness, the Four Horsemen of the Apocalypse can bring considerable help to Your Highness in the future, and I think Your Highness should still meet their requirements," Kyle reminded at the right time.

How could Zhao Changan not know this truth, but it was really difficult to find a place of death......

"Your Highness, I think Crimson Castle is a great place to transform into a place of death," Kyle said with a chilling smile on his face.

However, Zhao Changan's eyes lit up, what Kyle said was indeed a good way, if it is not my race, its heart will be punished, and Zhao Changan does not have the slightest mercy for the blood envoy at all.

"Good suggestion, I will consider it carefully, the most important thing at the moment is to build enough communicators immediately, I hope that when the war begins, we will have enough communicators, so that we will definitely be able to reduce a large number of casualties," Zhao Changan said in a deep voice.