Boulder was not surprised by this, and looked at the scrapped machinery and said: "You see, when the strength reaches level five, there is no way to maintain the machinery I made, but in the royal manufacturing factory of our goblin royal family, there are more powerful machines that can penetrate deep into it, and even resist the power of the strongest dark tides." “

"However, it's just that we can persevere, although we use the power of magic to release extremely strong power, so that our goblins have magical power that can release great power, but this kind of power is simply to release power, not to release a magic. “

"And that magic rune, it is clearly a change of some kind of magic, only the power of the magic itself can be solved, we can create a machine that releases magic power, but we can't cast real magic, this is something that no matter how clever the machine can't do, unless we goblins have magic power that can exceed level four, reach level five, and six, in order to truly crack this magic rune. “

"But all this is impossible, therefore, we can only continue to study, to analyze the power composition of the magic rune, hoping to use many machines at the same time, or according to a certain law to urge the machinery, as much as possible to simulate the operation of the magic rune, so as to imitate the magic fluctuations, but this kind of project is too difficult, the combination of magic elements is too fine, and the way of transformation and combination is not easy to achieve by machinery, so many goblins have given up on this, hoping to be able to put back the space on the ground through other ways。 “

"But if you give up this, it is equivalent to giving up the dungeon, otherwise once you move the dungeon, the power of the dark tide will burst out in an instant, and when the time comes, the entire dungeon will be destroyed, which is also unacceptable to us, after all, we no longer have the strength to build another dungeon, once there is no dungeon, even if we return to the above-ground space, we can only be slaughtered. Boulder said disappointed.

Seeing this, Gu Feicang couldn't help but sigh, the strength of the goblin was indeed too weak, however, this dark tide didn't seem to be able to stop him, but it was definitely not easy to enter the dark tide under the cover of the goblin, and besides, he didn't have all the preparations, and he still needed to plan well.

Therefore, after a week of wandering away in the dark tide, Gu Feicang returned to the Side Hall with Boulder, and Boulder was not surprised at all that Gu Feicang did not get along with Boulder, in his words, it was not easy to solve the dark tide, the goblins have been experimenting for 10,000 years, and in these 10,000 years, there have been countless goblins who are desperate for cracking the dark tide, and now the dark tide has basically become a scenic spot in the dungeon, whether it can be cracked or not, there are a lot of goblins who come here to play, nominally research, but in fact just want to see it, after all, such a difficult thing, for goblins, which can be regarded as an inspiration.

Speaking of which, there are really a lot of goblins who have observed the dark tide, although they have not thought of a solution, but they have imitated the principle of it, or because of this, they have invented a lot of other machines, therefore, from the beginning, the goblins have been strictly guarding the dark tide, and now, basically every goblin can come to see the dark tide, not as Gu Feicang imagined, the entire dark tide has a very tight defense, which also facilitates Gu Feicang's actions.

In the following time, Gu Feicang did not stop studying the dark tide, whether it was from the surrounding environment or other aspects, he never let go, and also detected a lot of small information from Boulder's mouth, so that he had more confidence in passing through the dark tide.

However, he still did not act rashly, but waited, waiting for an opportunity, until this day, he finally waited for his opportunity, Gu Feicang closed his eyes, and his mind appeared in the castle space, still a vast blue sky, suspended these few white clouds torn out at will, under the sky, under the bright sun, the endless grassland, the continuous mountains, the castle space standing on the peaks and meadows, the towering buildings, one by one wantonly exuding their own beauty, appeared in front of Gu Feicang。

Compared with when he first got the castle space, today's castle space is simply the eighteenth change of the female university, all the fourth-level buildings have basically been completed, and the entire castle space is becoming more and more decent, now, what Gu Feicang has to do is to complete the construction of the last two fourth-level buildings, the magic vortex and the spell casting platform.

Just by listening to the name, you know that these two buildings must be inseparable from magic, the cost of these two buildings is not cheap, it requires a full 30,000 gold coins, fifty points of wood, fifty points of ore and one hundred points of Force gems, similarly, these two buildings are also the precursor buildings of the upgraded training ground, since entering the underground space, Gu Feicang has been thinking about building these two buildings all the time, but because of the lack of resources, it has been shelved, until today, the resources are finally sufficient, he decided to build these two buildings.

With the flash of light, I saw that in the sky of the castle space, a huge vortex gradually formed, at first it was only about the size of a fist, but as time passed, the diameter of the vortex continued to expand, and finally, it reached the size of two meters, which can allow a person to smoothly shuttle through before stopping, constantly rotating in mid-air, countless magical powers surging from the void, surrounding the magic vortex, which is extraordinarily magnificent, like a dream color.

On the other side, on the huge tower-shaped building of the magic guild, under the same milky white light, colorful gems were inlaid on the white jade pillars, forming a high platform of the platform, on which the magic patterns were engraved, and the magic gems reflected each other, exuding a rich magical power, and the power of the entire magic guild continued to surge, surging towards those magic gems, blessing on the platform, showing a huge magical power.

Before Gu Feicang could take a closer look at the role of these two buildings, in his mind, the sound of upgrading the training ground to become an advanced training ground sounded, accompanied by a burst of white light, Gu Feicang did not hesitate to upgrade the building of this sixth-level class, and at the same time upgraded the cavalry to a knight.