A few minutes later, the pale-faced Xu Yun took Bai Xiaosheng and Rebecca out of the auction hall, and he didn't know what conditions Longxing Tianxia had offered, so not only did he not leave, but instead took on the defensive task, Bai Xiaosheng was thrown by him by Longxingtianxia as a liaison.

The huge Exchange Square in front of Xu Yun was already empty at this time, and only the stalls existed.

The players who had crowded this place before, at the first time when the accident happened, were 'persuaded to quit' by the players of the Dragon Mercenary Group who had been prepared for a long time, and it was precisely because of the early preparation of the Dragon Travel World that the players could be emptied as soon as possible, turning Xia Long City into a 'battlefield' without idle players.

"Boom!!"

"Boom!!"

"Boom!!"

As soon as I walked out of the auction floor, a violent explosion poured in as if it could shatter my eardrums.

"Is the defense zone of the Reincarnation Legion over there?" , Xu Yun looked at the stronghold city where the troops were stationed now, he found the location of the Reincarnation Legion from the system panel, and now he was about a kilometer away from the Reincarnation Legion, and he could directly talk to the three deputy commanders of the Legion at this distance, so he would throw Bai Xiaosheng beside Long Xingtianxia as a liaison.

Within ten kilometers of the military flag, not only can you see where the troops are and orders, but the corps commander can also talk to the deputy corps commander, which is also a powerful function of the legion, otherwise the reward of the military flag is not worthy of the difficulty that can only be obtained by the top nine in the national war.

The Wyvern Emperor stood quietly after being released.

Xu Yun quickly climbed onto the back of the Flying Dragon Emperor, and the Flying Dragon Emperor immediately spread his wings and rushed into the sky and flew in the direction of the Reincarnation Legion, Xia Long City did not have such a thing as a forbidden air enchantment, and it would take more than ten minutes to rush over from the ground, so Xu Yun would choose to rush from the air.

"What's going on?" After flying into the air, Xu Yun discovered a strange thing.

Because he didn't see the enemy attacking, but he could see that the walls of the three cities on the left hand side were shaking violently, while the six cities in the other directions were not moving, what made Xu Yun want to curse the most was that his reincarnation legion was stationed and the defense area was just in the middle of the three cities that were exploding, which means that the reincarnation legion might have an accident.

"Let's go!" , Xu Yun hurriedly said a word to Rebecca, who was floating on his side with his golden red wings, and then commanded the Flying Dragon Emperor to fly towards the stronghold city a kilometer away, and on the way to the flight, Xu Yun had a feeling that he was somewhat familiar with this explosion, as if he had heard it many times.

When flying in the city where the Reincarnation Legion of the Flying Dragon Dynasty was located, Xu Yun clicked on the legion system to select and call the Sky and the Moon.

"Chopping the sky, what's going on over there, who is the enemy?" As he spoke, Xu Yun glanced carefully a few more times and found that he did not see any enemy attacks in his field of vision, but explosions were still coming from the three cities.

"Captain!" , The voice of some surprise sounded, and then he immediately answered Xu Yun's question, "We didn't see the enemy either, but the city wall kept exploding, and it was about to collapse."

"Is it?" , Suddenly, a thought popped up, Xu Yun immediately listened to the explosion that became louder and louder as the Flying Dragon Emperor flew closer, and then thought of the true identity of the enemy this time, and he spit out four words from his mouth: "Alchemy Bomb!" ”。

Yes, this voice Xu Yun finally remembered, why he was so familiar, because this sound was the sound made when the alchemy bomb exploded, plus he heard that there was no enemy in the explosion place, so the only thing he could think of was the alchemy bomb.

Xu Yun didn't think of the alchemy bomb before, because the previous alchemy bomb could not be detonated at regular and remote control, but that was a month ago, and now I think that the other party has already created this type of alchemy bomb.

"Chopping the sky, I'll arrive immediately, you send someone to look in the city first, and see if there are any suspicious players! , I suspect that the exploding thing is an alchemy bomb placed by the enemy in advance, maybe the enemy is not far away", after guessing what the explosive thing was, Xu Yun immediately asked the Sky Chopping Moon to send someone to search the surroundings, because if it was detonated by remote control, then the people who placed it should be around.

"Knowing the regiment leader, I will immediately ask the starry sky to take someone to search!" , Cutting the Sky and the Moon also thought of it, and prepared to let the strongest assassin in the starry sky, the legion, take people to look for it.

After instructing the sky to be dialed and the moon was dialed, Xu Yun ended the call.

After seeing the situation of the nine outer cities above the Flying Dragon Emperor, Xu Yun understood why the other party chose the city to start.

Because the nine cities are arranged in a circle, it stands to reason that there will be a few hundred meters of open space between every two cities, and if the enemy's target is really the portal rewarded by the legendary quest, as the dragon said, then only need to pass through the nine outer cities.

But this normal offensive plan didn't work in Xia Long City.

Because Xu Yun saw that between the nine cities, there was a cyan giant wall several meters thick, more than ten meters high, and hundreds of meters long, which connected the nine cities into a whole, and this cyan city wall knew at a glance that it was built by the player, because there was no wall in this way in the system.

In the face of this defensive line built with nine stronghold cities as the connection point, if the enemy wants to attack the portal that is protected in the rear, it is indeed the only way to attack the city.

Otherwise, if you choose to break through the city wall between the two cities and attack over the city, then all the troops who pass by must bear the baptism of fire of the long-range troops of the cities on both sides, and it is better to attack the city directly, so that the long-range firepower of the cities on both sides will not reach the attacking troops, which is why the other party chooses to bomb the city with alchemy bombs, instead of blowing up the cyan walls of the cities.

"What a treacherous man!" After trying to understand why the other party would attack the city, instead of using the alchemy bomb to blow up the cyan city wall connecting the city and attack the portal directly, Xu Yun couldn't help but secretly curse Long Xingtian.

Because there are a total of nine cities, but the city where his reincarnation legion is stationed is attacked, if Long Xingtianxia does not have the intelligence of the enemy's attack and knows in advance what direction the other party will attack, Xu Yun will not believe anything.

It's a pity that Xu Yun can't regret it now, so he has to speed up and fly towards the city defended by the Reincarnation Legion.

It takes a lot of time to run a kilometer on the ground, but if you can fly from the air, you can easily cover a kilometer in about a minute.

When Xu Yun flew to this fourth-order stronghold city on the Flying Dragon Emperor, it was just when the twenty-meter-high city wall in front of him collapsed because it could no longer withstand the explosion of the alchemy bomb.

"Whoa!!"

As the frontal wall collapsed, a gap nearly ten meters wide was revealed.

As soon as he jumped off the back of the Flying Dragon Emperor, Xu Yun asked the Sky Chopping Moon, who had rushed over with Joan of Arc and An Jie'er, "Chop the Sky, have you caught anyone?" He wondered if anyone had been caught.

"I'm sorry Captain, let her run away!" Before he could speak, the starry sky with his head drooping on the side said with some shame that when he was about to push the other party into a desperate situation just now, he was caught by the other party and had the opportunity to escape.

Hearing that there were indeed people, Xu Yun knew that he had guessed correctly, the alchemy bomb should be that kind of remote control detonation type, and it should be detonated at a certain distance, and what he wanted to know was this.

"It's okay, the city walls have collapsed, even if we kill the other party again, it won't help, the important thing for us now is to defend this place, the other party should attack, otherwise I'm sorry for so many alchemy bombs!" , Xu Yun waved his hand towards the starry sky, signaling him not to take it to heart.

Xingkong heard Xu Yun's comfort, gritted his teeth unwillingly, he was really unwilling to the assassin who escaped from his hands, he usually called himself the first assassin of the reincarnation legion, but he made such a mistake when performing the mission.

"Cutting the sky, are the monks of the Defense Arrow Tower stationed there?" , Xu Yun turned his head to look at the 9 defensive arrow towers above the tall base camp behind him, and asked if the monks sent by the Heaven and Moon Cutting Force had been stationed.

Each defensive arrow tower in the city can be stationed with a 10-unit small ranged unit, and the ranged troops in it can all increase the range, attack power, and attack speed by half, which can definitely make the long-range firepower of the fifth-order monks have a qualitative change, so Xu Yun specially asked about it.

"It's sent, and there are 4 units of Sun Sacrifice on it!" For this kind of strategic place that can make the long-range troops qualitatively change, of course, the long-range troops were sent in as soon as possible.

"Well, now we're waiting for the 'guest' to come on!" , Xu Yun looked at the direction of the collapse of the city wall and said, it is impossible for the other party not to appear.

And the guests Xu Yun said began to appear on the remote horizon as he expected.