"Phew, a total of 11.37 billion spirit coins." Bai Yu looked at the large string of numbers and said excitedly.
"Upgrade! Upgrade! Upgrade! "
The entire grotto-heaven rumbled and continued to expand outwards.
It did not stop until it expanded to 1,000 square kilometers.
"So cheap!" Bai Yu looked at his remaining spirit coins. He had spent a total of 1 million spirit coins and did not even use a fraction.
Next, Bai Yu moved all the buildings a large distance away, leaving enough space for them to expand.
"Continue to upgrade. All the buildings will be upgraded to level 5!"
One by one, the buildings lit up.
The first to finish was the Stargate. Now, the Stargate's height had reached 200 meters and its width had reached 100 meters.
At a glance, it was a huge monster in the entire grotto-heaven.
Starlight flickered on the tall Stargate, and the aura of the stars on it became even more mysterious.
This was only the change in appearance. The most important thing was its function. The furthest teleportation distance had reached 1 million light years, and the projection's strength had been increased by 30%.
With such a long distance, he could reach many important commercial planets.
For example, Horned Dragon Star was only 320,000 light years away from Earth. He could easily reach this planet now.
The next to finish was the Wisdom Palace. This time, the Wisdom Palace had been upgraded by two levels. The entire building had expanded by four times, and the number of cultivation rooms inside had also increased by four times, reaching 120.
Among them, the effect of Comprehension and Cultivation had reached six times the original effect.
The Wisdom Monument and the Wisdom Tower inside had also been strengthened.
Moreover, the content analyzed by the Wisdom Monument in the future could be directly loaded into the virtual world.
In other words, his opponents in the virtual world were no longer monotonous murderers.
It could even be an enemy that was created from a secret manual as an opponent.
Moreover, as long as the content was analyzed by the Wisdom Monument, it could be used in the virtual world.
In other words, as long as he analyzed enough secret manuals, he could even use domains or even laws in the virtual world.
However, this goal was still far away for the time being. However, one day, the virtual world would develop into a behemoth that was not inferior to the virtual universe, or even surpass it.
The buildings were upgraded one by one. Only the Great Void City Square remained at level 4.
After all, if he leveled up again, the number of times he could use the money tree would be reduced by one. He had to make a trip to the Great Void Market first to obtain a Tier 4 treasure before continuing to level up.
This time, the money tree shook for an entire day and night before it was covered with treasures.
After obtaining the Tier 4 treasure, he once again upgraded the Great Void Market to the Tier 5 level.
The current Great Void Market had expanded twenty times compared to the original one, and there were countless shops on the streets.
Of course, the largest buildings were the two palaces in the center and the palace with the projection of the Hall of Wisdom on the periphery.
If the Great Void Market could open now, it would definitely be bustling with people coming and going, and it would definitely be bustling with noise.
However, now was still a good time.
"But it won't be long now," Bai Yu thought silently as he activated the money tree again.
This time, he had learned to be smart. He had the Yellow Scarf Strongman stand guard at the side while he himself went to the Wisdom Hall to try out the powerful abilities he had gained after rising two ranks in a row.
The moment he entered the pure white space, his mind was filled with inspiration.
"So that's how it is!" Bai Yu came to a realization. "So I was thinking wrongly. The concept of water encompasses all things, so why should I be constrained by hardness and gentleness?"
Indeed, because of the influence of Sky Water Sword, he had a special understanding of the hardness and gentleness of water, allowing him to have a great breakthrough in his skills to deal with enemies.
However, just hardness and gentleness, or a combination of hardness and gentleness, limited the development of the concept of water. Water should encompass all things, so his previous thinking had fallen into a misunderstanding, causing him to not make much progress in his research on the Water God Book.
"Very good. With the right train of thought, I am now confident that I can reach the level of great success in the concept of water within a month," Bai Yu said confidently.
As for whether he could reach perfection, it was hard to say. After all, perfection was only one step away from domain.
Perfection of the concept meant that the door to domain had been opened by half a step.
And domain meant that one was invincible among those of the same level. This threshold was not something that could be easily crossed.
Even Luo Feng had to wait until The Golden Horned grew to the universe level before he automatically comprehended the first level of domain. From this, one could see how difficult it was to comprehend a domain.
…
Three days later.
This time, the Money Tree lasted even longer, but at the very least, he obtained a Tier 5 treasure.
So far, Tower had obtained a total of 40 fifth-stage treasures, 80 third-stage and fourth-stage treasures, and 40 treasures of the other stages.
Of course, this was the result of the treasure bowl doubling.
After all the buildings were upgraded, Bai Yu looked at the remaining spirit coins. There were a total of 11.24 billion spirit coins.
"It seems … It seems that the remaining spirit coins are enough to upgrade the grotto-heaven!"
The surprise came too suddenly. He originally thought that he would need to sell a portion of the treasures to upgrade the grotto-heaven. He did not expect that upgrading those buildings would not cost much spirit coins at all.
The Great Void Market consumed the most spirit coins. When it was upgraded to the fifth stage, it consumed 100 million spirit coins. The other buildings only consumed 10 million spirit coins at most.
"Convert spirit energy!"
Streams of spirit energy gushed out from the void. As the spirit energy continued to spread, the number of spirit coins in the grotto-heaven also decreased rapidly.
10 billion, 9 billion, 8 billion, 7 billion …
It was not until he only had 1.24 billion spirit coins left that it slowly stopped.
This time, just the conversion of spirit energy consumed 10 billion spirit coins.
However, the effect was obvious. The concentration of spirit energy now was at least ten times that of when the grotto-heaven was upgraded before the spirit energy had spread.
However, Bai Yu also knew that this concentration of spirit energy could only last for a while. After the grotto-heaven was upgraded, the concentration of spirit energy would decrease again.
After the conversion of spirit energy was completed, Bai Yu began to upgrade the grotto-heaven.
This time, he used up the last one billion spirit coins.
The entire grotto-heaven began to rise continuously. It was exactly the same as the previous upgrade. He could no longer see how high the sky was.
10,000 meters!
This was the result of his measurement after he boarded the fighter plane.
"Sigh, the next upgrade of the grotto-heaven will be even more difficult. I hope these treasures can be sold for more money." Bai Yu shook his head.
Next, Bai Yu began to evaluate the price of the treasures in the virtual universe through another body.
Soon, the price of the treasures of the fourth stage and below was estimated.
"Not much. Only about 79 billion Ganwu coins. "Bai Yu shook his head.
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