After the true yuan in the dantian was depleted, it could have been able to draw some from the surrounding environment. But this is the shipwreck area of the Listening Cloud Secret Realm, and there is no way to draw Yuan Power from the surroundings at all. Therefore, Du Feng had no choice but to take out a bottle of elixir and pour it into his mouth, and then continued to inject Yuan Force into the runes.

He had a feeling that as long as ten runes were activated, there would definitely be something different. However, the more difficult it was to activate the rune the further it went, and before the pill he took could be digested, the true element in his body was depleted again. After such a big effort, I just activated the ninth rune.

There is still one rune left, and as long as the tenth rune is activated, something will definitely happen.

Du Feng was ruthless, took out a relatively large phoenix diamond and held it directly in his arms. Free your right hand and continue to activate the runes in the cabin. The tenth rune slowly lit up like this.

"Buzz ......"

When the tenth rune was completely lit, this time the hull did not shake, but a dark compartment in the cabin slowly opened.

Du Feng glanced at it, not knowing whether to cry or laugh. Because he knew what was inside this dark compartment, it was really the power compartment of the ship. To put it bluntly, that's the place to add immortal stones. According to the specifications, if you want to drive this stone ship, you must fill in the low-grade immortal stones. This is reasonable, if such a large ship is driven by the Yuan Force of human warriors, then it must not exhaust a bunch of people.

If there are second-order immortal stones, the effect will be better, but the best that Du Feng currently has is the first-order high-grade immortal stones, that is, those phoenix diamonds. This is still because he made a fortune in the small world of Qiankun, otherwise he would not have been able to take out so many high-grade immortal stones.

Now that the power compartment was open, Du Feng couldn't help but be curious and wanted to try it.

He took out a high-grade immortal stone the size of a skull and threw it into the power cabin. Then I heard a loud rumbling bang, as if a giant beast had woken up. Strangely, at the same time, there was a roar in the distance. Du Feng listened carefully, it was not the sound around him, and the sunken ships around him did not move.

Maybe it's the echo of the bottom of the sea, Du Feng can only think so.

Such a large high-grade immortal stone is equivalent to hundreds of pieces in normal times. But the stone boat just let out a roar, and it had no intention of floating, let alone being driven.

Du Feng glanced at the cabin, and several more runes were activated. It took him half a day to activate ten, and a large high-grade immortal stone was thrown into the power cabin, and fifteen runes were directly activated. It sounds like a lot, but compared to the total of 9,9991, it still seems to be a pitiful few.

His grandmother fought hard, and Du Feng gritted his teeth and was ruthless. He also took out a bunch of high-grade immortal stones, all of which were originally obtained from the small world of Qiankun, and threw them all into the power cabin.

But this time, there were still so many high-grade immortal stones in there, and there was not even a sound. However, Du Feng paid attention to it, and just threw it just now, and activated more than a hundred runes. He could even feel that the hull had become a little lighter.

There is an effect, and it really has an effect. Du Feng couldn't suppress his excitement, if he could really drive this stone ship more than 100,000 years ago, what would it be like. Not to mention how strong the material of this ship is, the inertia of the heavy hull alone should not be underestimated. Driving a big ship of this level in the sea of clouds, it is really a rampage and invincible.

Du Feng was a formation mage, and he knew it very well. If these runes could indeed be activated, the stone ship would be able to float on the sea. Sneaking in the water, or flying in mid-air is not a problem. At that time, even if it is a high mountain or a place in the sky, you can drive a big boat to go there and take risks.

There are still many dangerous places in the sea of clouds that I have not been to, and there must be more and better treasures there. Some high-grade immortal stones are nothing, anyway, you can earn them again after the money is spent.

Thinking of this, Du Feng was also out of his mind, and kept taking out high-grade immortal stones from the small world of the necklace and throwing them desperately into the power cabin. In fact, his heart was dripping blood every time he threw one, but he could only endure it for the sake of a bigger goal.

The runes on the ship were quickly activated, and Du Feng's immortal stones became fewer and fewer. You must know that when he first came to the Heavenly Realm, he was an invisible rich man, and he was not short of money even in the Immortal City. After arriving at Yuxianmen, he only wanted to earn contributions from the sect, and he was not interested in money.

But after this time, I'm afraid he will become a poor bastard. Because a large number of high-grade immortal stones were thrown into the power compartment, his inventory was getting smaller and smaller. It is very likely that so much labor paid in the small world of Qiankun will be in vain.

The runes on the stone ship did activate quite a bit, but they still didn't fully activate. His high-grade immortal stones are about to run out, and if the hull still can't be started, it will be a waste of money. Du Feng's heart was dripping blood, and he grinned in pain.

If you get out, since you have already thrown away so much, it is better to throw them all in, and the big deal is to start all over again.

So Du Feng simply didn't look at it, and threw it in with his eyes closed. Throw all the remaining high-grade immortal stones, including some bits and pieces, into the power compartment. After throwing it, he opened his eyes and saw that the runes on the hull of the ship were still not fully activated, and he was indeed a little desperate.

Forget it, it's nothing more than a gamble. I am willing to gamble and lose, and I can earn the money I lose.

Du Feng's current strength is not weak, and if he goes to other places to find something to sell and sell, he can get a lot of money. Not to mention low-grade and medium-grade fairy stones, there are also a lot of collections. Those who wanted to rob Du Feng before, and the people who were killed by him also had equipment that was not messy and messy, and they could all be taken out and sold.

Although Du Feng is more open-minded, it still sounds a little sad to make a living by selling equipment.

"Alas......"

He sighed and closed the power compartment, intending to look somewhere else to see if he could turn something out.

"Woo woo woo ......"

As soon as the lid of the power compartment was closed, the stone ship whistled. Then the entire hull shook violently, and then began to float upwards.

What's the situation, Du Feng hurriedly held on to the table next to him. Just now, I thought it was a complete failure, and all the immortal stones were lost. I didn't expect the stone ship to start suddenly, and it floated so fast. As soon as his stone ship floated upward, the prohibition of the undersea city was opened, and a large amount of seawater poured in.

"Oops, run!"

The others saw that it was not good and quickly drilled out, because the wreck they were on did not float up, and they were all crushed by the sea. If you don't leave quickly, you may be trapped inside and unable to get out.