Among the 50-person teams where Yu Tianxiao and Lan Xing'er are located, the strongest is the two of them, Yu Tianxiao is the two-star special peak, and Lan Xing'er is the two-star high peak. The other 48 students were all 2-star elementary, or 2-star intermediate.

In this actual combat environment, whoever is strong is the real king and the real boss, so it goes without saying that when these 50 students tested the strength of everyone around them with their own intelligent arm guards, they all naturally unanimously elected Yu Tianxiao as their captain, and Lan Xinger as the vice captain, and selected a vice captain from among the 48 of them.

In this way, the 50-person assessment team has a captain and two deputy captains.

After determining the candidates for the captain and vice captain, everyone immediately had the backbone and cohesion, and they were absolutely obedient to the captain Yu Tianxiao, who was much stronger than them. In this way, under the leadership of Yu Tianxiao, the captain, the 50-person assessment team continued to swim to the depths of the Blue Star Sea.

Among them, when the students enter the Blue Star Martial Arts Hall, there are two courses that are compulsory for every student, and also compulsory courses for every level of students, whether they are one-star students or nine-star students, they must be learned from bottom to top, which is flying and avoiding water.

Flying, it goes without saying, will make everyone more powerful in marching and fighting, and will also make everyone have a higher survival rate in dangerous situations. Avoiding water, on the other hand, allows everyone to communicate freely with each other when they are marching and fighting in the water, without having to speak dumbly or using telekinesis to transmit sounds.

Although it is very convenient to transmit telekinesis in the water, it will consume everyone's telekinesis, especially for those students who are not majoring in telekinesis, using telekinesis is simply a big burden for them.

And after learning the method of avoiding water, they can use this trick to avoid the influence of water in the water, and communicate with each other freely, there is no difference between communicating with the outside world, Yu Tianxiao and Lan Xing'er, each of them will avoid water, so that they will not be affected in any way in the sea of blue stars.

On the way to the bottom of the Blue Star Sea, Yu Tianxiao and his team were attacked by some Blue Star Beasts in the sea area, but their strength was not very strong, and the strongest was the high-level beast general, so all the incoming beasts were easily dealt with by them.

After a day's journey, they finally came to an underwater city.

I saw that this underwater city has a radius of nearly 1,000 square kilometers. The city is circular in shape, and there is a high parapet around the city. The city has castles of different heights and sizes, just like the world of a fairy tale on earth.

There are many sources of underwater cities in the Blue Star Sea, some of which are land cities in ancient times, and then after changes, the earth's crust is transformed, and they are submerged under the sea, and then they become ruins. Some of them were thousands of years ago, or even tens of millions of years ago, or even longer, when the Blue Star people bought a mobile, monolithic castle, and then because they lived for too long and used too old, they were abandoned in this Blue Star Sea, and gradually became ruins.

And some of them are a long time ago, when the Blue Star Empire was not strong and developed, and it was still an indigenous planet, in order to find the treasure on the Blue Star, the alien people secretly built an undersea castle in this Blue Star Sea.

But as the Blue Star Empire grew stronger and more developed, they were discovered. After being discovered, some of them left the Blue Star of their own accord, while others were driven out of the Blue Star by the Blue Star Empire, so that in the end, only those underwater castles remained.

Some are alien spaceships, or the Blue Star people's own spaceships, which crashed in the Blue Star Sea and were not salvaged, and eventually became ruins.

In addition, it is the natural environment changes on the seabed that form a natural cave cavern, and over time, after the erosion and corrosion of the seawater, a natural underwater castle is formed. These naturally formed castles will also hide all kinds of treasures, some of which are left behind by explorers, such as weapons and armor; And some are naturally formed treasures, such as energy crystals, all kinds of exotic metal ores, etc.

In short, this boundless underwater world is full of endless opportunities and challenges.

Yu Tianxiao and his 50-member assessment team first stopped in the sky above this underwater city to watch for a while, and then swished! Whoosh! Turned into streamers of light and fell in front of the huge city gate one after another.

I saw that the huge city gate, which was nearly 100 meters high and 50 or 60 meters wide, was covered with silt, aquatic weeds and other tiny sea creatures, and the original appearance of the city gate was almost invisible. Seeing this, Yu Tianxiao couldn't help but immediately say to a master student beside him: "Rocco, you first attack this city gate with a telekinetic weapon and see what the reaction is?" ”

"Yes, Captain!" I saw that as soon as the words of this control student named Luo Ke fell, he immediately controlled a disc-shaped telekinesis weapon, turned into a streamer and slammed into the tall city gate.

Rumble! With the impact of the telekinetic weapon, the tall city gate couldn't help but immediately let out a muffled sound, followed by some aquatic weeds and silt falling, and then there was no response. Immediately after, boom! Rumble! Rumble! The telekinetic weapon bombarded several times in a row.

After these several impacts, at last, the tall gate revealed a small piece of its true color. It turned out to be a black gate, and golden lines could be seen on the gate, all of which showed its nobility and extraordinary.

Immediately, Rocco swooped and withdrew the disc-shaped telekinetic weapon.

At this time, Yu Tianxiao couldn't help but sigh softly: "I really didn't expect that after such a long time, and there is the immersion and corrosion of seawater, this gate is still so strong, depending on the situation, this city must have a history of tens of millions of years, or even longer!" ”

Listening to Yu Tianxiao's words, Lan Xing'er, who was standing on the side, couldn't help but nod, and the other students were even more surprised!

"That's it! Since this gate is so strong, let's go over it and go into the city! At this time, Yu Tianxiao couldn't help but immediately say to everyone.

"Yes!" The other students replied in unison.

"Then let's go!" As he spoke, he saw Yu Tianxiao swish, and he took the lead in taking off into the air.

But at the moment when Yu Tianxiao soared into the sky, hey! Oh! Oh! Suddenly, a piercing and terrifying roar came.

"What!"

"What kind of monster is this calling?"

"Yes! It's terrifying! What kind of monster the hell! ”

……

Hearing this strange roar, many students immediately discussed in surprise and exclaimed.

Just when everyone was surprised and talking about this, boom! Rumble! Rumble! I saw a sea blue star beast the size of a hill in an instant, from the inside of the city gate, over the city wall, and rushed out!

"Stand back!" When Yu Tianxiao, who was suspended in mid-air, saw those black, mountain-like sea blue star beasts suddenly rushing out of the city and over the city wall, he couldn't help but immediately shout to all the students behind him.

Wow! Whoosh! Whoosh! After hearing Yu Tianxiao's order, all the students, including Lan Xing'er, immediately flew to the rear, and immediately retreated to a hundred meters away. Immediately afterwards, Yu Tianxiao also flew into the team.

Although Yu Tianxiao's strength is the strongest, he doesn't dare to make a move easily without figuring out the other party's situation, because his strength is only relative to other students, not absolute, invincible strength.

When Yu Tianxiao led his assessment team to withdraw to a hundred meters away, he couldn't help but immediately stop and look at the monsters that suddenly appeared.

I saw that these were six fish blue star beasts with a body length of twenty or thirty meters away. The head of these fish sea blue star beasts was completely black from top to bottom, and the black scales the size of a basin shone terrifyingly from time to time against the backdrop of the seawater. The eyes of the two fish were like two asteroids, and the huge fish's mouth was full of razor-sharp teeth, as if it could bite through all hard substances.

In front of these six fish sea blue star beasts, Yu Tianxiao and a group of them were like a group of small shrimps and small fish cubs, looking so incompatible.

Looking at the six Blue Star Beasts of the Fish Sea on the opposite side, Yu Tianxiao couldn't help but say to everyone: "These Thunderfish Beasts are all high-level beast generals, if we want to enter the city, we must deal with them first." ”

"That's right, with them in the way, we can't get into the city at all!" A male student said.

"Yes, they have to be dealt with, I didn't expect these rotten fish to have such a horrible scream!" Another female student said.

"Okay, everyone follow me, let's have a thunderfish dinner today!" Saying that, he saw Yu Tianxiao swoop first, and then brandished the Star Cutting Sword to kill one of the Thunderfish Beasts, and then, Lan Xing'er, Luo Ke and all the other students immediately waved their respective weapons, or controlled the telekinetic weapons to kill the six Thunderfish Beasts with all their might.

Moment! Oh! Oh! Oh! Ding-bang! Ding-bang! Burst! Yes! A battle of meat grinding began between the merfolk.