The allied forces of humans and demons had defeated the demon race on Meteor Island more than half a year ago.
In the last great battle, the human and demon races joined forces, forcing the demon race's main army to flee in disarray, suffering countless casualties.
Even several Nascent Soul stage cultivators of the demon race had perished.
What Xiao Fei regretted was that, despite his and Zhu Yu's combined efforts, they had failed to capture the demon dragon, which had escaped using a secret technique.
However, the spoils of war from this battle were already immense.
With the demon race's main force annihilated, humans were no longer at an absolute disadvantage and had officially begun their counteroffensive.
As for the demon race, they were aquatic creatures unaccustomed to staying on land for extended periods. They retreated after reaching the coastal areas of the Eastern Continent.
It was indeed difficult to keep a group of seafood creatures away from water for long.
Moreover, the Eastern Sea demon race had directly confronted the demon race's main force in this great war, resulting in mutual destruction. It was time for them to return and recuperate.
Although without the assistance of the demon race, humans had achieved victory after victory in their pursuit, reaping countless rewards.
In the past six months, humans had reclaimed three cities on the Eastern Continent.
However, these cities, reclaimed by humans, had been ravaged beyond recognition, devoid of their former vitality, leaving only empty shells.
The humans who originally lived in these cities had been largely massacred by the demon race when they occupied them.
The demon race had also kept some humans as slaves for their daily use.
But when humans recaptured the cities from the demon race, the streets were littered with human corpses.
The humans who had served as slaves to the demon race had all been killed before the demon race retreated.
The spiritual resources in the vicinity of the cities had also been taken by the demon race if they could carry them, and destroyed if they could not.
The three cities recaptured by humans had all become wastelands.
Nevertheless, even so, humans had to reclaim their ancestral lands from the demon race and expel them from this realm.
This was the land where humans had lived and multiplied for generations.
In the past six months, Ji Wudi, with the help of Xiao Fei's elixirs, had also successfully broken through to the Nascent Soul stage.
Now, the entire human race had four Nascent Soul stage powerhouses: Zhu Yu, Huang Feifei, Xiao Fei, and Ji Wudi.
Coupled with two flying sky ships, they were now fully capable of engaging the demon race's main force head-on.
Currently, external combat affairs were handled by Zhu Yu and Huang Feifei.
They each led a flying sky ship.
Xiao Fei and Ji Wudi continued their cultivation in the secret chambers of the flying ships.
Ji Wudi, having just broken through his realm, still needed to stabilize his Nascent Soul stage cultivation. This process could take anywhere from a few months to several years.
Xiao Fei, on the other hand, was still diligently cultivating his "Wind Thunder Battle Body."
This technique had nine levels, and Xiao Fei had only reached the fourth level. If he were to reach the seventh level or higher through a fortunate opportunity in the future, his strength would surpass that of the Nascent Soul stage.
His physical strength would then break through the Nascent Soul realm and reach the Void Refinement stage, a realm he had never heard of before.
As for the vast spiritual energy required to cultivate this technique, he could use a large number of elixirs as a substitute, and his cultivation speed was no slower than absorbing spiritual energy.
In fact, Xiao Fei had always wanted to break through to the Nascent Soul stage. He had even prepared over a hundred portions of Nascent Soul Pills, ranging from low-grade to high-grade.
With the conditions he currently possessed, even if he pulled a random dog from the roadside, with this pile of elixirs, he could cultivate it into a Nascent Soul dog.
But he himself could not, which was the most troublesome matter for him.
The jade slip within his body required a large amount of spiritual energy and a considerable amount of spirit stones for each advancement.
Now that he was following the human army's counteroffensive, he had hoped to collect more spirit stones, but things did not go as planned, and the gains were meager.
Many spirit stone veins had already been mined by human guerrillas, and some had been destroyed by the demon race.
Very few spirit stones remained on the Eastern Continent.
Xiao Fei had only collected four billion spirit stones so far, which was far from his goal.
At the same time, everyone else had also discovered this serious problem: there were no more spirit stones, and the spiritual energy concentration across the entire Eastern Continent had been continuously declining.
This was a matter of great importance to the entire cultivation world. Their flying sky ships required spirit stones, many formations required spirit stones, and numerous other aspects required spirit stones.
Furthermore, as the spiritual energy concentration declined, it became increasingly difficult for Nascent Soul stage cultivators.
Each time they used their internal spiritual power, it took an extremely long time to recover.
However, Xiao Fei possessed a large quantity of ten-thousand-year-old spiritual herbs and ten-thousand-year-old spiritual wine, which gave him a significant advantage in replenishing his depleted spiritual power.
Moreover, the spiritual energy concentration on the Eastern Continent continued to decline because both sides were still madly consuming spiritual energy in the war, and neither could stop.
As a result, it had become somewhat difficult for late-stage Nascent Soul cultivators to absorb spiritual energy for cultivation or recovery.
One did not know what the Eastern Continent would look like after this war ended; it might become a ruin, a barren land.
In the future, the Eastern Continent might enter an era of no magic, where people on the continent could not cultivate, or could only cultivate to the Golden Core stage. Perhaps even Foundation Establishment cultivators would become local overlords.
It was even possible that the strongest would only be at the Qi Refining stage.
Xiao Fei entered his spatial dimension. The four billion spirit stones he had collected were all carefully packed in wooden chests.
These spirit stones were now dwindling, and he was reluctant to use even one.
Obtaining these spirit stones on the Eastern Continent had been the limit. In the future, to get spirit stones, he would have to look towards the Eastern Sea, and he did not know how many he could obtain.
Fortunately, the spiritual energy in his spatial dimension was abundant, allowing him to cultivate spiritual herbs and brew spiritual wine, which in turn provided him with a large amount of spiritual power.
Logically, energy is eternal, and spiritual energy does not appear out of thin air.
However, the source of spiritual energy in his spatial dimension was somewhat strange.
First, it was the spirit stones he invested. After decomposition and absorption, they produced a large amount of spiritual energy, increasing the spiritual energy concentration in the spatial dimension and accelerating the passage of time.
This step was relatively normal, with nothing too mystical about it.
However, the spiritual plants in his spatial dimension needed to absorb and consume spiritual energy for growth, and his aged spiritual wine also required spiritual energy.
After consuming a large amount of spiritual energy, the spiritual energy concentration in the spatial dimension did not decrease.
Normally, the jade slip was hidden within him, showing no signs, and outsiders could not find any trace even with their divine sense. It also did not absorb spiritual energy.
Xiao Fei could not understand where the spiritual energy consumed by the spatial dimension normally came from.
After checking his spatial dimension, Xiao Fei opened a wooden chest, inside which were more than ten spiritual herbs of ten-thousand-year-old vintage, rich in spiritual energy.
He casually took out a few ten-thousand-year-old spiritual herbs from the wooden chest and sat by the lotus lake to refine elixirs.
He had two lakes in his spatial dimension. One was larger, the home of the flying fish.
The other was a small lake full of lotus flowers, which Xiao Fei had specifically used for planting aquatic spiritual herbs.
Xiao Fei sat by the lotus lake and began to refine the ten-thousand-year-old spiritual herbs.
Now, the elixirs refined from ten-thousand-year-old spiritual herbs were not only used for cultivation but also to replenish the spiritual power depleted by Nascent Soul stage cultivators.