Just as Xia Yun guessed, this beast tide really wants to make dumplings in Yew City, but not from the land, nor from the sky, but from the ground.

Xia Yun never thought that the true king spirit beast that organized the beast tide this time was the Earth Dragon Devouring Gold Rat, a spirit beast overlord of the underground world.

Just now, Xia Yun noticed that the Earth Dragon Golden Rat, although it was a Heavenly Spirit Beast, was very numerous, and he suddenly thought that the Spirit Beast might dig a tunnel to attack Yew City.

Outcome......

Xia Yun used the Blood Moon Divine Eyes to look at the ground, and was startled, the forest where Yew City was located was full of passages like spider webs within a hundred meters underground, which could accommodate a person-tall spirit beast to pass freely.

At this time, with the help of the passage, many spirit beasts had already bypassed Yew City, planning to intercept and kill those who had migrated on the way to Dusk Cloud City.

Thinking of this, Xia Yun suddenly felt creepy.

He really didn't think that the True King Spirit Beast had such a terrifying IQ.

"Is it the Beiyu Empire?"

Xia Yun naturally thought of the mastermind behind this beast tide.

However......

Xia Yun didn't have so much time to think about these questions, and the Burning Sun Eagle at full speed caught up with the Blue Dragon Legion and the others in less than ten minutes.

"Go and inform the city lord. ”

After jumping off the Sun Eagle, Xia Yun asked the Sun Eagle to rush to meet the Yew City Lord.

Facing the three-headed Holy Spirit Beasts that were rushing over underground, Xia Yun was not completely sure that he would protect those who were behind the migration team.

"What's wrong?"

Qingyan saw Xia Yun hurrying back, so he came to the front and asked suspiciously.

"Beast tides are coming from underground. ”

Xia Yun briefly talked about it.

"What?!"

Qingyan was taken aback, it was the first time he had heard of such a beast tide.

"No less than a million spirit beasts, right under our feet. ”

Xia Yun said solemnly.

The only thing to be thankful for is that the spirit beasts underground are just catching up with this migration team.

"A million?"

Qingyan suddenly frowned, it was impossible for the Blue Dragon Legion alone to stop this million spirit beasts.

What's more, this million spirit beasts are just the vanguard, and there are more than 10 million spirit beasts behind them.

Although most of the spirit beasts were mortal spirit beasts that were not too strong, they couldn't stand too many of them, and even if they stood in line for the Blue Dragon Legion to slaughter, they would have to kill for several days.

The worst ......

Among these million spirit beasts, there are three holy spirit beasts, dozens of heavenly spirit beasts, more than 10,000 earth spirit beasts, and more than 100,000 true spirit beasts.

Those three Holy Spirit Beasts alone, if the Yew City Lord didn't make a move, it would be enough to wipe out the entire Blue Dragon Legion.

"I've already asked the lord of the castle to come over. ”

Xia Yun added.

When Qingyan and the others heard this, they calmed down a little.

"We're going to destroy the underground passage first. ”

Xia Yun said very decisively.

Qingyan and the others were silent.

It is not difficult to destroy the underground passages, but in this way, there will be a chain reaction, and when all the passages collapse, the thousand-year-old city of Yew City will cease to exist.

"You have an idea!"

Qingyan looked at Xia Yun and suddenly said seriously, although he didn't know how Xia Yun discovered the underground passage, but among the people here, only Xia Yun knew the situation best.

"Hmm. ”

Xia Yun didn't pretend about anything, and said, "You go and tell the others to speed up." ”

"Good. ”

Before the words fell, Qingyan left immediately.

As a result, the entire Blue Dragon Legion was handed over to Xia Yun to command.

"In this battle, we may die. ”

Xia Yun summoned the Blue Frost Tyrannosaurus, stood on her head, looked down at the Blue Dragon Legion of nearly 10,000 people in front of her, and said, "I don't force anything, those who are willing to stay, stay, and those who are unwilling, go and protect others." ”

Before the words fell, the scene was silent.

However......

Not a single person turned away.

Seeing this scene, Xia Yun suddenly smiled and took a deep breath, although this world is very cruel, there is still an extremely warm place.

Perhaps, this is the scenery on the road that Qingyan reminded Xia Yun at the beginning.

"All on alert!"

Xia Yun yelled.

Before the words fell, the Blue Frost Tyrannosaurus rose into the sky.

"Sorcerer prepare!"

Xia Yun's voice, like thunder, echoed in the sky and reached the ears of everyone in the Blue Dragon Legion.

"Sorcerer prepare!"

"Sorcerer prepare!"

The two deputy commanders of the Blue Dragon Legion and the major regiment commanders all shouted.

"Boom!"

There was a neat pace, as if shaking the earth, and all the sorcerers of the Blue Dragon Legion stepped forward.

"Blue Ice Frost!"

The Blue Frost Tyrannosaurus suddenly raised its huge head, and the corners of its mouth shone with a dazzling blue glow, as if a round of scorching sun was hanging high in the sky, making people dare not look directly.

Wherever the icy blue light passed, all turned into ice sculptures, stretching hundreds of meters ahead.

A radius of 100 meters is full of frozen soil.

"Attack!"

Xia Yun roared out again.

"Attack!"

"Attack!"

As the voices of the two deputy commanders and the major leaders sounded, all the sorcerers unleashed their strongest spells.

In an instant, all the colorful spells fell on the frozen soil.

"Boom, boom, boom......"

The explosion was like thunder.

"Bang!"

In less than three breaths, the frozen ground exploded completely.

"Boom!"

With a loud bang, the frozen soil completely collapsed, and because the underground was full of passages, there was a chain reaction in an instant, like a major earthquake, extending along the underground passages, and soon spreading to Yew City.

"Boom!"

There was a loud bang that echoed in the sky.

Dusty!

Xia Yun watched as Yew City, a thousand-year-old city, sank into the ground and ceased to exist, with an indescribable complexity in his heart.

Eventually, the collapse extended beyond the reach of Xia Yun's vision.

As for how many spirit beasts died, Xia Yun didn't care, only how many came out.

"Three hundred thousand?"

Soon, Xia Yun determined that among the million spirit beasts, there were still 300,000 who had escaped this catastrophe.

At this moment, countless spirit beasts came out of the ground, and most of them were earth spirit beasts and true spirit beasts, and most of the mortal spirit beasts did not escape this catastrophe.

The Blue Dragon Legion looked at the more and more spirit beasts in front of them, although they were nervous and scared, none of them flinched.

"Martial Spirit Master prepares!"

Xia Yun shouted ruthlessly.

"Martial Spirit Master prepares!"

"Martial Spirit Master prepares!"

The voices of the two deputy commanders and the major commanders once again reached everyone's ears.

"Kill!"

Before the words fell, Xia Yun's figure flashed, and he took the lead, rushing into the group of spirit beasts, taking advantage of the fact that those spirit beasts had not completely reacted, and wanted to be caught off guard.

The Blue Frost Tyrannosaurus is no exception, entering the group of earth spirit beasts, just like a wolf entering a flock, a child.

"Kill!"

All the martial spirit masters of the Blue Dragon Legion instantly killed like a tide.