Since Lan Xing'er is an elite student of the martial arts hall, and she has studied and cultivated elsewhere before, coupled with her super physical fitness, she can stay in the sea for a year and a half, which is also the characteristic of all Blue Star people. On the entire Blue Star, even newborn babies can stay in the water for ten days and a half.

And those Blue Star people who have reached a lifespan of more than 100,000 years and become invincible existences can stay in the water for as long as they want, completely unrestricted.

As for Yu Tianxiao, not to mention, due to his special life structure, he can stay in the water indefinitely. He himself is made of the blue liquid, and of course its internal structure is completely different from the seawater, but this does not affect his activities in the seawater.

After entering the sea, Yu Tianxiao and Lan Xing'er swam to the depths of the sea.

Since they couldn't speak in the sea, Yu Tianxiao and Lan Xing'er could only communicate by telephonic. Mind Transmission is a compulsory course for every Blue Star Martial Arts Gym student, and only if you really learn Mind Transmission, then you can be regarded as a real martial arts student.

If any student can't learn this telephony, then the Blue Star Martial Arts Gym will immediately kick them out of the Martial Arts Gym. Because he can't think of the Teleporter, it will be difficult to complete the task well in the combat mission after the warp, and no matter how he cultivates, he will not become a real Blue Star Guardian.

Soon, Yu Tianxiao and Lan Xing'er had gone deep into the sea for nearly a thousand meters, and then walked a distance before finally reaching the bottom of the sea. Brush it now! The two landed together on a hill.

I saw that this underwater world is surrounded by mountains, rolling and undulating, and there are all kinds of corals of different colors growing on the mountains, as well as other marine plants, which are beautiful as a painting at a glance.

Not only that, there are all kinds of animals here, along the way, Yu Tianxiao and Lan Xing'er have encountered a lot, some have not transformed into Blue Star Beasts, just some ordinary marine animals, but some have transformed into Blue Star Beasts, there are beast soldiers and beast generals, but the Beast King and Beast Emperor level can't be seen at all, because the Beast King and Beast Emperor level rarely come out for activities.

Along the way, Yu Tianxiao and Blue Star Er were not attacked by the Blue Star Beasts of the Sea Area: one is because the Blue Star Beasts of the Sea Area are much more docile than the Blue Star Beasts on land, and if you don't take the initiative to attack them, they will generally not come to attack you.

The second is because Yu Tianxiao and Lan Xing'er are traveling very fast, and they both choose those Blue Star Beasts to take the road with less money, so they have not encountered those Blue Star Beasts in the sea who like to take the initiative to attack and have a more ferocious temperament, so they have not been attacked by any Blue Star Beasts along the way.

Standing on this undersea mountain peak for a moment, Yu Tianxiao couldn't help but say to Lan Xing'er beside him: "It seems that this sea area should be called the Phantom Sea. ”

"Phantom Sea? How do you know that when we came, the Advance Tower Intelligence didn't tell us what this sea was called? Lan Xing'er couldn't help but ask.

"Xing'er, you are really stupid, why is that divine dragon called the Phantom Sea Divine Dragon, not called other Divine Dragons, it is obviously because this sea is called the Phantom Sea, and the Divine Dragon lives in this Phantom Sea, so it was named the Phantom Sea Divine Dragon." Yu Tianxiao slowly transmitted.

"Oh! That's right! How I didn't think of this, it's stupid! Lan Xing'er was also taken aback, and then suddenly realized.

"I know this time!" Speaking of this, Yu Tianxiao couldn't help but pause, and then continued: "If we want to get the Dragon Ball, we must first find the Phantom Sea God Dragon!" ”

"But the Illusory Sea is so big, and we don't have any clues, and the Advancement Tower doesn't give us instructions, where are we going to find the Phantom Sea Dragon?" Lan Xing'er couldn't help but ask back.

"It's easy to do!" Yu Tianxiao couldn't help but smile confidently.

"Easy to do?" Lan Xing'er was shocked when she heard this, she really couldn't think of any good way.

"Yes, that's easy! The reason why the Phantom Sea Divine Dragon is called a Divine Dragon must be an overlord in this Phantom Sea, since it is the overlord, then the fame in this Phantom Sea must be very great, and the fame is of course known to almost everyone, so let's catch a Blue Star Beast and lead the way! Yu Tianxiao said slowly.

"That's right! This method is good, but if we want to catch it, we have to catch the big, powerful Blue Star Beast, and the minimum must be at the level of the beast general, otherwise those beast soldiers and ordinary level may not know any details, only know that there is a powerful Blue Star Beast of the Phantom Sea Divine Dragon. Lan Xing'er immediately realized the truth.

"This time you're finally smart, if you want to catch us, go and catch a high-level beast general to lead the way." Yu Tianxiao immediately smiled and said.

"High Beast General Level! Can we catch it? You don't need to be so powerful, just catch a beginner beast general! Lan Xing'er was first startled when she heard Yu Tianxiao's words, and then couldn't help but say.

"No, it has to be a high-level beast general, because only a high-level beast general-level Blue Star Beast can communicate with us normally, and only if that Blue Star Beast can communicate with us normally, we can make it help us better, so that we can find the hiding place of the divine dragon faster and earlier." Yu Tianxiao said.

"Hmmm! Okay, I'll listen to you. Hearing Yu Tianxiao say this, Lan Xing'er had no choice but to nod heavily.

"After a while, after the fight, you can just watch from the side, and I'll go and catch the Blue Star Beast alone." Yu Tianxiao couldn't help but say again. He knew very well that the high-level beast general-level Blue Star Beast would never listen to them honestly, let them catch it, only if it was subdued, and if it was to be subdued, there would definitely be a fierce battle.

"Got it!" Lan Xing'er nodded. Lan Xing'er knew in her heart that she and Yu Tianxiao broke into the promotion tower together, Yu Tianxiao was the main force, and she was just a helper.

"Alright, let's go now." With a swish, Yu Tianxiao jumped up and swam into the distance, and then Lan Xing'er also jumped up and immediately followed.

In this way, Yu Tianxiao and Lan Xing'er quickly advanced at the bottom of this illusory sea, looking for the Blue Star Beast of the high-level beast general-level sea area that could be attacked.

The two of them traveled about twenty nautical miles, and suddenly, Yu Tianxiao's eyes couldn't help but light up, and then he saw that not far ahead, there was a turtle-like high-level beast general-level blue star beast wandering there, looking for prey.

I saw this turtle blue star beast: the huge turtle shell on its back was more than ten meters in diameter, and there were golden secret patterns on the black turtle shell, and the golden secret patterns looked very clear and complex. His limbs were like stone pillars, and his head was the size of a small basin. The two big black-and-gray eyes were like light bulbs. The whole turtle looks like a big tank.

When Yu Tianxiao saw this big turtle, he immediately recognized that it was the famous black turtle beast in the Blue Star Ocean.

The Black Tortoise Beast lives in the oceans of the Blue Star, and is known for its strong defenses, which cannot be broken through by ordinary cold and thermal weapons, and only swords made of special materials or high-energy laser cannons can break through its hard tortoise shell.

Looking at the black turtle beast in front of him, Yu Tianxiao immediately began to think about how to deal with it, but just as Yu Tianxiao was pondering, suddenly, he saw the black turtle beast swish, and in an instant, it was like a speeding tank, rushing straight towards Yu Tianxiao.