With her previous explanations, Nia quickly knew what she really wanted to do and what she needed to achieve.

Next, the two went their separate ways, with Nia staying on the vacuum side to make a few previous versions of the Acanon Crystal Extractor for emergencies, and then designing a more powerful extractor.

Xia Duo, on the other hand, came to the water side of the Azurite Plane and began to determine the casting location and transformation target.

After a brief comparison, he finally chose a body of water far away from Fish-Man Island, which looked like a gray blade about an inch away from his current position.

And the main body of the floating city he wants to create next is far less big than Fish-Man Island, so it is conceivable that there is a high probability that his movements will not be noticed by the fish-people on Fish-Man Island.

The closer you get to Fish-Man Island, the more complex the composition of the water body becomes, and the farther away from Fish-Man Island, the closer the water body is to pure water.

Xia Duo did not consider the composition of the water body when designing the spell, but it is clear that the closer to pure water, the higher the transformation efficiency, and the smoother and more stable the stone after transformation.

Once you've chosen your location, it's time to mark the cast node.

This is the auxiliary spell casting link that Xia Duo borrowed from the elven magic, and in the elven world, when the high mage casts a large spell, the auxiliary nodes related to the spell casting elements are usually arranged in advance.

And in order to minimize the difficulty of spellcasting, those auxiliary nodes are almost powerful magic items, mainly in the form of physical magic circles, altars, and even auxiliary spellcasters.

Xia Duo didn't have that much spare money to waste, and the color resistance magic and elven magic were not the same in terms of casting details, and he needed more virtual nodes for hints than auxiliary nodes that could actually participate in spellcasting.

That's why it's called "annotation", not "building".

……

Starting from the first marked "A1" cast position, Xia Duo began to lay down bright rays, which were just light and shadow illusions, and did not have any power.

Due to the high difficulty of this spell to cast, it was difficult for Xia Duo to devote his energy to retrace his memories when he cast the spell, and at this time, he was not as nervous as he was when he raided the elves in Seventon, and he had enough time to prepare various auxiliary measures.

Soon, the "A1" position was shrouded in a "cage" composed of layers of bright light rays.

Then, Chardo non-stop stretched out six long positioning lines from the "A1" position, which would be the trajectory of the spell projection, which would also need to be used in conjunction with the perception field.

At the other end of these six positioning lines, the straight lines begin to twist, and the two are combined to form a regular circle, and these three large circles are intertwined with each other, roughly forming a spherical structure with a unified center of the circle.

This is the real birthplace of the floating city, the "A3" construction field, and the "A2" is based on the already formed "A3", which is a large-scale independent perception field.

Although the transformation magic can be woven and perfected at the source of the spell, and there will not be too many variables after projection, Xia Duo knows that the blueprint is the blueprint, and the finished product is the finished product.

The so-called "a small mistake is a thousand miles" is most appropriate here.

Normally, the impact range of spell casting is only a few meters or hundreds of meters, but now what Xia Duo wants to create is a large building with a diameter of more than two kilometers, and no matter how perfect the spell source is, as long as the projection process is slightly deviated, it may be difficult to look directly at the finished product behind.

Xia Duo did not complete the spell with the attitude of casting spells at this moment, but with the attitude of making industrial products to complete the spells, so there must be clear requirements and standards before, during, and after casting.

After almost an hour, all the secondary nodes in the "A3" construction field were marked, which was simpler in principle than the secondary node marker at the spell source point at the "A1" cast location, but took twice as long as the latter.

After thinking about it, Shado marked an observation point near the "A1" casting location, and then notified Nia.

……

"Wow! Is that the Floating City over there? It's huge! ”

After Niya arrived, she was immediately amazed by the intricate bright lines in the "A3" construction area, and asked again and again: "When will it start, I can't wait to see the finished product." ”

Xia Duo calculated the time, and there were still ten minutes before the best casting time, "Don't worry, wait a while." ”

"How long will it take?"

"See the changing colored lines over there?" Shado pointed to the time marker he had deliberately left at the "A1" casting position, and said to Nia, "When it's gone, I'm going to start casting." ”

Then, Xia Duo introduced his set of spell casting assistance measures to Niya, and waited until the colored lines began to flicker, and Niya, who had been paying attention to the other side, immediately reminded Xia Duo: "Look there, is it going to disappear?" ”

"Yes, I passed, you stay at the observation point and don't move. Oh, so don't be too surprised by what you see. ”

Xia Duo reminded him and came to the preset casting position, and then his body turned into a ball of pure water, merging with the pure water of the surrounding waters, except for a slight light refraction and distortion, there was almost no difference to be seen.

Liberated from the human form, and also seemed to be freed from the desire of the human body, Xia Duo in this state was at peace in his heart, and was able to concentrate more on casting complex spells.

Of course, the avatar water flow has another benefit, that is, you don't need to worry about drowning due to the failure of the [Plane Harmony] spell during casting.

At this moment, Xia Duo is water, and how can water drown in the water!

This is his best home stadium!

……

Watching the flickering of colored lines, Xia Duo knew it was time for him to start, but the first thing he did was not a well-prepared transformation spell, but a detection spell.

The moment the spell was completed, he had an additional perspective, that is, the "A2" perception field that relied on the "A3" construction field, but had not been completed until now.

Subsequently, Xia Duo silently counted "1, 2, 3", and the colored lines disappeared, leaving a small dot that flickered slightly, and seeing this point of light appear, Xia Duo began to officially cast the spell, and the source of the spell was at the small dot that appeared after the colored lines disappeared.

Subsequently, the bright light rays around the "A1" cast position where Xia Duo was located began to change, and rays continued to shoot into the spell source point from various directions in various positions, which had no effect on the spell itself.

But for Xia Duo, it is an out-and-out spell prompter, he only needs to construct the appropriate spell elements in time according to the instructions of the incident light rays.

……

As the source of the spell was built little by little, a large number of magic web strings converged, emitting dazzling magical aura, but the magic aura was not in the same perspective as the normal light.

In other words, Chado was able to tell the difference between the two at the same time.

The appearance of the spell aura did not have any adverse effect on Xia Duo's spell casting, but this increasingly strong aura gave Xia Duo a hint, that is-

He didn't make any mistakes!

Go on!

……