This was obviously not what Cui Si wanted, so he quickly stopped the exchange of the flying boat and asked to use the Demon Realm Flying Boat to buy genuine immortal weapons or pseudo immortal weapons.

At this time, Cui Si's business is booming. The flying boat is the treasure of the housekeepers of various sects, and they are generally reluctant to make a move, but they are not short of pseudo-immortal weapons, especially the sect of demon cultivation, which has a lot of seized pseudo-immortal weapons that can only be used by decent monks, and it is not easy to sell, so they simply exchange some precious flying boats from Cui Si.

In addition, there are some forces from the Demon Realm, and they don't have the flying boat that Cui Si needs. But there are a lot of pseudo-immortal weapons that have been seized because of various wars over the years, and now they are all cheaper Cui Si.

It is especially worth mentioning that the Ghost Demon Emperor of the Nine Hells also specially sent someone to find Cui Si for exchange. The Blood Demon Qi of the Nine Hells is also Demon Qi, so the Flying Boat of the Ten Thousand Demon Abyss can also travel with him.

So for this kind of strategic resources, he is extremely attentive. Not only did he exchange dozens of pseudo-immortal weapons for a lot of medium-sized flying boats, but he also hit the idea on those top-level flying boats that Cui Si didn't want to change.

Cui Si is also a simple person, and two genuine immortal weapons will be exchanged for a top-level flying boat of more than 1,000 zhang. The people of the Nine Hells agreed without saying a word. After all, the top flying boat itself has a genuine immortal artifact as the core, plus other components and labor costs, even if you exchange three genuine immortal artifacts, you will not lose anything.

Of course, the flying boats that Cui Si exchanged for them were all wounded after fighting. It's just that the injury is not serious, just repair it, no matter how it is counted, it is the Nine Hells to make a lot of money.

In addition, the appetite of the Nine Hells was not ordinary, and they even got the idea of the ship of the Lord of Ten Thousand Demons. It's a pity that Cui Si is not a fool and didn't sell it to them. After all, no one knows whether Cui Si and Jiuyou Hell will be friends or foes in the future, in case the two sides are opposed in the future, but they sell such a perverted warship to them, it won't be a shot in their own feet?

In short, after a few months of tossing, Cui Si exchanged for more than 200 pseudo-immortal weapons, plus sixteen genuine immortal weapons. Although most of these immortal artifacts are not very easy to use, otherwise people are reluctant to change them. But for Cui Si, as long as they can become the core of his Five Spell Flying Boat, it will be worth everything. When all the flying boats are made, Cui Si's five-spell flying boats will be doubled.

By the way, when Cui Si was fighting with the Lord of Ten Thousand Demons, the flying boats he lost were only on the surface, in fact, before those flying boats exploded, Xue Jing made people retreat, and when they retreated, they took away the core of the flying boats by the way, so these flying boats can be restored in the future.

Because when Cui Si was making the flying boat, the number of immortal weapons and pseudo-immortal weapons in his hand was not enough. So he deliberately made some flying boats without cores as inventory, so after getting so many immortal weapons, Cui Si put those immortal weapons on the body of the flying boat in the inventory, and immediately added a full hundred five magic flying boats, including ten top-level flying boats.

In this way, the total number of five spell flying boats that Cui Si could now use reached three or four hundred, which was more than before the Endless Deep Survey.

In the blink of an eye, several months have passed, Cui Si's injuries have healed, and the damaged flying boat has been repaired, all the five spells on the flying boat have been completed, and even the newly made flying boat has been trained by personnel. It can be said that everything has been prepared, and it will be able to make an expedition to the headquarters of the Black Yin Sect at any time.

In this case, Cui Si was not willing to wait longer, so he chose a time when the wind and the sun were beautiful, summoned all his subordinates, and held a pledge meeting before the expedition in the sky above the headquarters of the demon spirit world!

More than 300 flying boats are neatly arranged in the air, stretching for hundreds of miles, and the momentum is extremely spectacular. Cui Si sat on the repaired, 4,000-zhang long Five Elements Divine Boat, looking at the extremely powerful subordinates he had made, and his heart was extremely proud.

However, just when Cui Si wanted to make a speech and raise morale, there was suddenly a hint of gloom in the clear sky. At the same time, a powerful momentum was overwhelmingly pressed down, and even Cui Si couldn't stand it, and couldn't help but turn pale.

But fortunately, this momentum was immediately put away as soon as it was released, and the next moment, an old man with a white beard and black robe appeared in front of the Five Elements Shenzhou very abruptly.

Although this old man was obviously in front of everyone's eyes, no matter how much everyone used their divine senses to observe, they couldn't lock down his position, as if he didn't exist at all. Seeing this, Xue Jing immediately secretly ordered people to be on guard.

However, Cui Si only frowned, and said unhurriedly: "Dare to ask Your Excellency, but you are from above?" In the next Cui Si is reasonable! ”

"Haha, polite, uninvited guest, please forgive me for bothering rashly!" The old man smiled politely.

"Don't bother, I just don't know why you're here?" Cui Si asked quietly. But he couldn't help but feel excited in his heart, and said secretly: "Could it be that the fairy world is finally willing to come to guide me?" ”

Just when Cui Si was thinking wildly, the old man suddenly smiled mysteriously and said, "I do have something to do here, but it's more secretive, so it's not good to say to others rashly, look, can we find a quiet place to talk?" ”

For the request of an immortal whose strength was still above his own, Cui Si naturally did not dare not agree. He hurriedly asked his subordinates to rest for a while, and then personally led the old man to a luxurious living room.

After offering the best immortal tea and spirit fruit, Cui Si asked politely, "Dare to ask what the seniors are called?" What kind of identity is it? ”

"Hehe~" The old man smiled slightly and said, "After I say it, don't be surprised!" ”

Cui Siyan didn't understand what he meant, but he still said happily: "Don't worry, seniors, juniors are not the kind of people who like to make a fuss!" ”

"That's good!" The old man then said solemnly: "The old man is a disciple of the thirty-third generation of the Black Yin Sect, and he has been an immortal for more than 30,000 years!" ”

As soon as he heard this, Cui Si was taken aback, he never dreamed that the person in front of him turned out to be a person from the Black Yin Sect, and he immediately realized that he was afraid that the person who came would not be good, so he said with a cold face: "Haha, it turned out to be the predecessor of the Black Yin Sect, disrespectful and disrespectful!" ”

Although Cui Si said it nicely, it was actually a look of vigilance, and it was clear that he was unwelcome.

Of course, Yin Zi knew why Cui Si was like this, and the people and the Black Yin Sect were going to fight each other, so naturally they wouldn't treat him. In fact, if it weren't for his immortal status, I'm afraid Cui Si would have done it a long time ago!