"Space Gate?" Xu Yang understood when he heard the name.

In the Golden Age, how could a huge kingdom with a vast land and a territory of hundreds of millions of miles manage its own territory? If we relied solely on the ancient means of communication such as Pegasus and carrier pigeons, I am afraid that the changes in the frontier would not be transmitted to Kyoto in half a year.

Therefore, the sound transmission array and the teleportation array came into being, the former is fortunately, it is a small formation, and each start does not consume many resources. However, the latter teleportation array is much more expensive to use.

Although the teleportation array and the [Human Escape Array] carried by Xu Yang have certain similarities in the formation, there are still certain differences in use.

The human escape array is carried with you, which can record a certain place, and after a very short time of preparation, escape into the area in the record, which is suitable for small-scale and close-range teleportation.

The space gate, on the other hand, is a large formation fixed in a certain place, and it takes a long time to prepare before it can be activated. At the end of the space gate, there must be another space door for teleportation.

Generally, in the battle between the major kingdoms, after capturing a certain city, the space gate will be destroyed as soon as possible to control the city. Of course, civilian armies are generally cannon fodder, and this kind of siege warfare is relatively rare. If you want to destroy a kingdom, the most important thing is to fight at the pinnacle, to destroy the emperor and prince of the enemy country, so that the enemy country will collapse without a fight.

A large "domain door" that is one level higher than a space door can locate many subspace doors. The general small space door can only locate one direction, while the domain door can locate thousands of directions.

In the Kingdom of Haiyun, there are thousands of space gates, but there are no more than ten. Like Haiyun Imperial City, there is a large domain gate, which locates thousands of small space gates, which can be teleported to thousands of large cities. And the small space door. They can't teleport to each other, they can only teleport to the domain gate of Haiyun Imperial City.

Xu Yang understood that if he was in danger and crushed the jade talisman, Master Luo Baishui would rush from the domain gate of Haiyun Imperial City to Qingqiu City, and then rush to the area where he was in danger as fast as possible.

"With this jade talisman. My security has improved a lot, but I also have to know that I can't rely on Master alone, after all, it will take half an hour for him to come over, and within half an hour, there will be enough for a lot of things to happen. Someone is plotting against me on this trip, so be especially vigilant. Xu Yang came out of Luo Baishui and walked towards the chief manager's residence, secretly thinking in his heart.

"What? you chose to go to the danger zone Qingqiu?" the steward in charge of registration looked up in surprise. found out that it was Xu Yang, and said with relief, "It turned out to be you...... No wonder, your combat power surpasses that of your peers, and it is not interesting to go to the ordinary area again...... Okay, I'll register now. ”

Xu Yang asked softly, "Lord Steward, I wonder if I can inquire about the trial area chosen by other students?"

The steward shook his head and said, "Impossible, the trial area chosen by all the students." Canglan Mansion will keep it confidential. ”

Xu Yang just confirmed, and then nodded in thanks.

The steward handed over a token. The word "Qingqiu" is engraved on it: "If you hold this jade card, you can go to the western area of the imperial city and guard the domain gate." When they see this jade plate, they will naturally teleport you over. ”

Xu Yang thanked him, put away the jade plate and returned.

Back in the courtyard, Xu Yang cleaned up a little. I saw Yu Xuanyu knocking on the door and entering.

"Xu Yang, I'm going to go to the Roaring Wind Valley for trial, what about you, where did you choose?"

Xu Yang smiled and lit up the "Qingqiu" jade plate in his hand.

"Okay. It seems that you are really unwilling to go to the ordinary area, so I wish you a smooth journey," Yu Xuanyu shrugged, "By the way, I heard others say that Yan Yu seems to have also chosen the danger area, and she won't choose the same area as you." ”

Xu Yang smiled: "It's possible, but it has nothing to do with me." ”

"You have to be careful," Yu Xuanyu said, "Yan Yu is this person...... I always felt that something wasn't quite right. ”

"Isn't that right?"

"Yes, I've noticed it several times, in front of the deputy courtyard master of Han Xingsha, she is as cold as frost to those so-called 'guards' second goods, but with the deputy courtyard master Han behind her back, it is like a different person, although there are still few words, but there is a smile between her eyebrows and eyes, and she is not the kind of person who rejects people at all. So, I think this person is hypocritical. Yu Xuanyu said seriously.

Xu Yang Haha smiled: "Everyone has their own way of doing things, and it is okay to be hypocritical." Anyway, I don't have much to do with Yan Yu, is she good or bad, and what does it have to do with me?"

Yu Xuanyu is not used to talking behind her back, she just cares about Xu Yang, so she said a few more words.

The two walked all the way, out of the gate of Yundu, galloped for dozens of miles, and came to the Haiyun Imperial City.

The prosperity of the imperial city is incomparable to that of the clouds. Yu Xuanyu wanted to visit Haiyun Imperial City, but Xu Yang had the matter of hanging up clothes in his heart, so he didn't agree.

All the way to the west of the imperial city, pedestrians gradually sparsely few, and teams of black-armored sergeants patrolled back and forth. These people are all cultivators of Xuanshi, and looking at their fierce aura, their combat power is not weak.

Xu Yang and Yu Xuanyu stepped forward, handed over the jade plate, and after inspecting it, one of the captains of the team ordered two soldiers to take Xu Yang and others to the domain gate.

"This ...... It's the large domain gate in the space gate?"

Coming to the foot of the domain gate, Yu Xuanyu and Xu Yang were slightly stunned.

This is a huge portal 6 feet high, but there is no door, and in the middle is a huge black vortex, constantly rotating, like a ruthless giant black pupil, staring coldly at people.

The person in charge of the domain gate teleportation was a master of Xuanzong, his face was cold, and after inspecting the jade plates, he took away the jade cards of the two and reissued them with new jade plates.

Xu Yang took a look, and it was engraved with the three big characters "Haiyun City".

"If you need to return, take this jade card, go to any space gate, and sign up for teleportation. The accompanying soldier explained.

"Thank you. Xu Yang said to the Xuanshi-level soldier, and then said to Yu Xuanyu with a smile: "Xuanyu, I'll go first." At least a month, at most three months, I will be back, and I will see you in Canglan Mansion then. ”

Yu Xuanyu twitched her delicate little nose, her eyes were a little red, and she snorted and said, "Okay, don't be like going to death, it's just a trial, what's the big deal?"

Xu Yang smiled, he didn't say to Yu Xuanyu that someone was plotting against him, he was worried that this long-legged little beauty was in a hurry.

"This Grandmaster, please send me to Qingqiu City. Xu Yang bowed and stepped into the black vortex of the domain gate.

The Xuanzong master nodded slightly, and then his hands pinched the seal like a butterfly wearing a flower, and a line of white light shot into the formation pattern on the frame of the domain gate.

With a bang, Xu Yang's figure disappeared. (To be continued......)