To put it bluntly, Xu Fan regards the entire North Sea Black Tortoise as a huge battery, and he can use the power of lightning in the battery to release his spells.

Although the North Sea Black Tortoise cannot generate electricity by itself, the amount of lightning power it stores is an extremely large and surprising existence.

These lightning powers have been accumulated by the North Sea Black Tortoise for so many years. Although they will not be replenished with consumption, these lightning powers will definitely be enough for Xu Fan to squander for a while if it is only low consumption.

And Xu Fan is not worried about this. The North Sea Black Tortoise can't produce lightning, which doesn't mean Xu Fan can't either.

The Thunder Sword in Xu Fan's hand contains lightning. This kind of lightning is produced by the Thunder Sword itself, which means that the Thunder Sword can generate lightning power.

When Xu Fan used the Thunder Sword before, although the power of lightning was strong, it could not be stored.

The reason is simple. When the Thunder Sword uses lightning, every use is temporary. When not in use, the Thunder Sword looks like an ordinary weapon, and it will not be covered by lightning.

If it hadn’t been before the North Sea turtle, Xu Fan’s Lei Sword would just produce lightning at any time and could not be stored. Although this kind of electrical energy was still very powerful, it could not be superimposed.

But the stored lightning is different. The more lightning is stored, the greater its power will become. In other words, the more times the lightning is superimposed, the greater its power will be.

But before Xu Fan got the Beihai Xuangui, he didn't have such a method. Even if he relied on the latest high-tech batteries produced by modern technology, he could not withstand such a significant voltage, let alone store the electricity and wait for it to be used at any time.

Xu Fan has always been temporarily obtained from the Thunder Sword when he was in use.

But the power at this time is also very powerful, and Xu Fan uses this method when he is not encountering a tyrannical opponent.

But if one day encounters a real opponent, this method is not 100% effective.

So when Xu Fan found out that the Beihai Black Tortoise had such characteristics, he was overjoyed. He could completely inject the lightning from the Lei Lei Sword into the Beihai Black Tortoise. When he was at war with the enemy, he only had to take the Beihai Black Tortoise. Xuangui summoned it, and then used the lightning on his body to attack the opponent without any worries.

Because the body of the North Sea Black Tortoise is large enough, it can store a considerable amount of lightning.

Even if Xu Fan used the most powerful lightning technique to inspire him to use more than a dozen destructive lightning strikes a dozen times, even Sirius would definitely not feel good.

Therefore, after Xu Fan knew this, he immediately began to cooperate with the Beihai Black Tortoise.

This kind of lightning coordination is much simpler than before they refining the tacit understanding. In fact, the Beihai Black Tortoise only needs to stay quietly next to Xu Fan. When Xu Fan needs it, he can move his mind from his body. Draw out the lightning.

In this way, Xu Fan can use these lightning to launch attacks quickly. In this case, there is no need for tacit understanding, and even the most basic cooperation does not need to be mastered, just let Xu Fan get familiar with this feeling.

Then, one day later, Xu Fan looked at the giant Beihai Xuangui in front of him with confidence in his heart.

In a short period of time, a tacit understanding has developed between the mysterious tortoise of the North Sea, and the true strength of the mysterious tortoise of the North Sea has been fully grasped.

The only task at this time was to find Sirius and send the wolf cub back to the heavenly court. Thinking of this, Xu Fan quickly jumped onto the back of the Beihai Xuan Turtle.

Then, with a thought, the Beihai Black Tortoise slid its limbs violently, moving towards the direction of the country of Mei. Although the Beihai Black Tortoise was not faster than flying in the air.

But it was much faster than flying alone.

And the most important thing is the speed at which the North Sea Black Tortoise can swim in the sea. No matter how fast it is, it hardly consumes its own physical energy.

In this way, Xu Fan's physical strength can be saved even more so that he can meditate and rest on the back of the North Sea turtle in the next time, adjust his state to the best, without delaying his rush to the United States.

After doing this, Xu Fan simply released the breath of the North Sea Black Tortoise and his own without any concealment, and then sat alone on the North Sea Black Tortoise, closing his eyes and adjusting his breath. The location here was far from the Mei Kingdom.

Even the mysterious tortoise of the North Sea needs two full days and one night to be there, and Xu Fan must pay close attention to making his strength more stable during these two days and one night.

Moreover, he had to adjust his strength to the best condition. The time passed day by day, and Sirius in the Mei Kingdom had already shown an expression of impatientness at this time. He had been waiting here for many days.

But there was no news about Xu Fan's whereabouts at all. Xu Fan seemed to have suddenly disappeared from the heavens and the earth, no matter how he looked for it, he couldn't find it.

A few days ago, he took the risk to transfer all of the puppet clones and rushed to the place where Xu Fan once got off the plane to investigate, trying to find Xu Fan's location.

But when these clones of him came there.

However, only a trace of Xu Fan's presence was found on a very remote island, and nothing else was discovered, and it is almost impossible to find Xu Fan in pursuit of this breath.

Because this time the breath only lingered on the island for less than a few days.

Then it slowly drifted away, and the breath it extended into the sea was completely covered by the sea water.

Even if the body of Sirius came to this kind of concealment, don't even want to find it, let alone him and these puppet clones.

But one thing can prove that Sirius felt that Xu Fan was definitely not planning to give up a decisive battle with him, but was brewing something.

But this feeling made Sirius extremely uncomfortable.

Because every day of this kind of brewing, it filled his heart with a trace of anxiety, even though he already had the magic weapon Blood Demon Axe in his hand.

Moreover, his own strength is about to reach the eighth level of the heavenly rank.

But he didn't expect that after Xu Fan, he felt a sense of urgency. It seemed that it would not take long for Xu Fan to suddenly emerge from the ground and launch a fierce attack on him.

Therefore, after a few days of deliberation, a vicious plan emerged in his heart. At this time, Sirius was already eager to decide the victory or defeat with Xu Fan.

The reason is very simple. When he first came to the earth, although he didn't go to Xu Fan, he decided to die because he had other things to do at that time. At this time, he had already done all these things, only left Let's make a final battle with Xu Fan.