At this moment, they were in the dark and cold void outside the sky, across the rigid sky dome, facing the edge of the Kangong plot in the north of the lake, which was the direction they had planned to expand the plot first.

Xu Yibing said: "Let's set up these nine magic arrays here, and after the array qi is exhausted, we will be able to produce a three-mile square piece of land here." ”

"You seem to have overlooked a problem...... Feng Luqi reminded, "After this land is generated, we can only really expand the plot if we include it in the rigid dome and integrate it with the nine-mile square land, and with the protection of the rigid dome, grass and trees can grow on this land." But how can I visually see that the edge of the nine-mile square seems to be less than three miles between the edge of the rigid dome. ”

"Well, that's right, I look like it's only two miles at most......" Sima Chengzhen said thoughtfully, "Actually, we can also arrange forty-eight ground formations around nine miles square, so that we can expand this square land to ten miles square, but the newly expanded land on the periphery will only be one mile thick, and we will need to generate ninety-six one-mile square boulders to fill the void below." ”

"If we follow your plan, our first step is to expand the nine-mile square land to ten miles of land, which requires a total of one hundred and forty-four one-mile-square boulders. "Feng Luqi is very fast.

Xu Yibing pondered for a moment and said, "No matter which plan is used, we have to try to incorporate the generated boulder into the rigid dome, and there are two ways to achieve it, one is to expand the rigid dome, and the other is to teleport the plot into it. Senior Brother Sima, do you know how this Rigid Dome came about?"

Sima Chengzhen was stunned for a moment, shook his head and sighed: "I forgot to ask the four grandmasters about this, but in order to maintain the stability and longevity of the Rigid Qi Dome, there must be an endless source of qi, I guess it is likely to be the spirit pool in the middle, because there are Xuan algae in the pool, which can always produce spiritual energy." ”

Xu Yibing nodded and said, "Yes, the spirit pool should be the eye of the formation, and there is likely to be a magic circle at the bottom of the pool, which is used to generate and maintain the rigid dome!

So everyone teleported to the spirit pool, and sneaked into the pool by avoiding water.

There are many peculiar fish, shrimp, turtles and shellfish in the water, and even water snakes, Mr. You Guang said: "Although I have been away from the spirit world for more than a thousand years, I haven't forgotten that there seem to be many unique water tribes in this water." ”

Sima Chengzhen said: "Yes, they are the four Shangqing sect masters who refined this mirror from all over the spiritual world and stocked them in it, shrimp and shellfish feed on algae, fish and crabs feed on shrimp and shellfish, and turtles and snakes feed on fish and crabs, forming an ecological balance." Although the algae can produce aura, it will actually consume aura, and if it is not controlled, overbreeding will only cause aura. ”

Mr. Cicada said approvingly: "Well, it seems that you Xuanmen still know a lot about this." ”

Sima Chengzhen said: "Man is the law of the earth, the earth is the law of the sky, the heaven is the law, and the Tao is the nature." The way of heaven is to make up for the deficiency when there is more than is lost. The way of man, otherwise, the loss is not enough to give more than enough. Who can have more than enough to serve the world, only the Taoist. ”

Cicada Blossom and You Guang didn't speak again, as if they were savoring what Sima Chengzhen said. Honggu also felt the deep meaning in his words, and couldn't help but realize it quietly.

The pool was very deep, and everyone dived two miles to the end.

The pond is sharp at the top and abundant at the bottom, and the lower it is, the wider it becomes, and it is already five miles square to the bottom of the lake.

As Xu Yibing expected, there was indeed a magic circle in the center of the bottom of the lake, although the sediment at the bottom of the lake was very thick, the magic circle was composed of light, rotating on the sediment.

Everyone harnessed the bubbles of the water avoidance trick to the top of the magic circle, Xu Yibing carefully looked at the spell on the array for a long time and said: "The rigid qi dome is generated and maintained by this magic circle, and the qi number of the magic circle is derived from the spirit pool. In addition, this array has two uses, one is to generate water from the Void Yuan Qi to ensure that the water in the Spirit Pool will not run out, and the other is to produce a moderate adsorption force on everything on the surface. ”

Yu Yunluo asked, "Why do you want to provide adsorption?"

"Because it's still too small. Sima Chengzhen immediately replied, "When the four grandmasters found this giant rock in the outer void, they found it difficult to gain a foothold on it, not only that, but in the giant rock belt between Mars and Jupiter, many huge rocks are difficult to gain a foothold, and there are also small stars that have formed a spherical shape, although they can stand on their feet, but as long as they use a little force under their feet, they can fly." Therefore, in order to allow people to gain a foothold in this nine-mile land, the four grandmasters also thought of some methods, and now it seems that they have landed on this magic circle. ”

Yu Yunluo frowned and said, "But why is this happening?"

Sima Chengzhen said: "The four grandmasters also thought about this problem at that time, and found that this is the subtle effect of the hollow vitality, the vitality converges to form the infinitesimal, the infinitesimal converges to form the subtle, and the subtle converges to form something visible to the naked eye, in which the invisible cohesion is the hollow vitality provided.

In the natural state, the strength of this cohesion is related to the catty of tangible things, the larger and heavier the object, the greater the cohesion, the more it can absorb foreign objects, so the five stars have atmosphere.

As for this nine-mile square land, two catties are too small, if you don't use the magic circle to artificially image the empty vitality, you can't absorb foreign objects at all, not only can't retain the atmosphere, but it is also difficult for people to gain a foothold on it. ”

Yu Yunluo nodded as if he didn't understand.

Xu Yibing said: "In short, the spirit pool is very important here, we mine and mine, but we must pay attention not to destroy the spirit pool!"

Yao Chanyi said: "Don't worry, I will tell Erlux Chen that it is powerful, and let them pay attention to protecting the spirit pool." ”

Xu Yibing said with a smile: "This magic circle has taught me a hand again, I can use the eye of the light array to make a kind of water formation, and put it into the outer void to make water, because the outer void is very cold, and the water created will condense into a huge ice block one mile square, and when the plot is expanded in the future, you can use the rock plot to surround the ice block, and you can create more lakes and pools." ”

Feng Luqi said: "Can you make a plot of land where rocks and water are mixed together?"

Xu Yibing thought for a while and said, "Yes, as long as you change a few spells to create a rock and ice mixed plot." ”

Feng Luqi said admiringly: "Senior Sister Xu, I found that you are very good at formation!"

Xu Yibing said: "I don't dare to be good at it, but I have been more interested in the formation technique of the seventy-two techniques of the Earth Demon since I was a child, and I like to ponder all kinds of enchantments, formations, and prohibitions." ”

"Senior sister is too modest!" Feng Luqi said with a smile, "You should be able to rewrite this circle and expand the Rigid Dome, right?"

Xu Yibing observed the magic circle for another moment, shook his head and said: "No, the current Lingchi Xuanzao is just enough to maintain the stable existence of the Rigid Qi Dome at its current scale in addition to providing adsorption and water production, if you want to expand it, unless the Xuanzao increases and produces more spiritual energy, but the current amount of Xuanzao is actually just right, if it exceeds this amount, it will overmultiply, and it will consume the spiritual energy."

Therefore, to expand the rigid dome, we must first expand the plot, and then expand the scale of the spiritual pool, in order to provide sufficient water for the normal growth of the algae, and then produce more spiritual energy, and then I don't need to rewrite the magic circle, it will also expand the rigid dome on its own, and even after the block is expanded to a certain scale, its natural adsorption force is enough to maintain the stability of the atmosphere, and then there will be no need for the rigid dome. ”

"That's still a very distant thing, maybe we have to wait until we cultivate to the Heavenly Immortals......" Sima Chengzhen was silent for a moment and said, "At present, it seems that we can only strive to expand the nine-mile land into ten miles first." ”