Even when this clone stood beside him, no one could detect any difference between them, not even in the aura of their primordial spirits. That was truly terrifying.
This world was not without spells that could alter one's appearance or even slightly change the aura of one's primordial spirit.
On the battlefield at the Imperial Pass, Future Desolate had used a similar transformation technique to disguise himself as another cultivator, then repeatedly ambushed and killed experts from the Foreign Realm.
That technique had indeed achieved many remarkable victories at first, but his disguise had eventually been exposed.
Anyone several realms higher, or possessing special spells or powerful divine sense, could still distinguish a clone from the original.
Qin Feng had initially been unsure how well his technique concealed the clone, so he had deliberately carried out some tests.
For his first test, Qin Feng had chosen an expert on the immortal path outright, because he was not worried about anyone in the Supreme Realm seeing through it.
He had already spent over a hundred thousand years in the Immortal Domain. At ten thousand years old, he had reached the late Supreme Realm, and at twenty thousand, he had become an Extreme Dao Supreme.
That was the level of a Great Emperor in the later era of Shrouding the Heavens. The only difference was that he had not fused with the Heaven's Heart Imprint, so he knew perfectly well that Supreme cultivators could not spot anything amiss with this treasure art.
Qin Feng had conducted his first test while a True Immortal was expounding the Dao. His clone and his original body had appeared together, posing as two separate people to listen to the teachings at the True Immortal's daoist grounds.
They had then separately asked the True Immortal questions about cultivation, using different names. Yet the True Immortal had shown nothing unusual throughout, speaking gently with both Qin Feng and his clone.
Normally, if the other party had truly seen through the clone, he would certainly have pointed it out. But this True Immortal had never realized that Qin Feng and the clone were actually one person, which had put Qin Feng considerably more at ease.
To be safe, Qin Feng had also tested other True Immortals in the Immortal Domain. Over ten thousand years, he had tested more than a dozen in succession, always with the same result: none had noticed anything unusual at all.
After confirming that True Immortal-level beings could not see through his clone's power, Qin Feng had decided to visit the Immortal King Daoist Grounds for further testing.
Qin Feng had deliberately chosen Pan King, who was known within the Immortal Domain for his good temper and exceptionally gentle disposition.
Even if Pan King saw through him during the test,
he would merely regard Qin Feng as a junior who had cultivated a little divine ability and wanted to show it off. Pan King would not stoop to taking offense.
At the Peach Banquet back then, Qin Feng had even deliberately sent his clone up to make a splash, defeating several Supreme Realm experts in succession.
Only afterward had come the audience with the Immortal King. An Immortal King was still willing to receive an Extreme Dao Supreme, since Extreme Dao Supremes were all promising True Immortal prospects who could attain that realm.
Qin Feng and his clone had spoken with Pan King separately, yet Pan King had noticed nothing unusual whatsoever.
Afterward, Qin Feng had tested several other Immortal Kings, visiting their daoist grounds to hear their teachings. The results had all been the same.
Only then had Qin Feng been certain that, at the very least, ordinary Immortal King-level experts could not detect anything wrong with his clone.
As for Emperor Light Immortal Kings, Peerless Giants, and other Giant Immortal Kings, Qin Feng had not dared test them. Beings of that caliber rarely appeared in the Immortal Domain.
This technique had always been Qin Feng's greatest trump card. His clone, working alongside his original body and the demonic shadows possessing eighty percent of his strength, could create a four-against-one situation.
His clone was somewhat similar to the Bula's ability in Coiling Dragon, except that he controlled the clone completely, and it would never develop a will of its own.
The clone also possessed an utterly broken ability: first and foremost, it could not truly die. As long as his original body remained, even if the clone was killed, he could condense it anew by spending just a thousand years.
Beyond that, the clone could also cultivate independently, and even absorb and fuse with other Immortal Seeds.
Qin Feng's original body cultivated the Immortal Ancient method, which involved fusing with a Dao-unification seed. The closer an Immortal Seed was to the Great Dao of heaven and earth, the greater one's future achievements would be. In fact, after fusing with certain top-tier Immortal Seeds, such as a world tree sapling, a tree of life seed, a primordial purple qi seed, a proto-universe seed, a five elements immortal seed, or a myriad dao tree seed, one had a very high chance of becoming a True Immortal, provided one did not perish.
There was even a tiny chance of becoming an Immortal King.
When Qin Feng had first embarked on his cultivation journey, he had been considered a prodigy in his own region, earning him the right to compete for the finest Immortal Seeds.
Back then, Qin Feng had obtained two top-tier Immortal Seeds in total. One was a chaos-colored sea of qi, with the radiance of myriad Daos gleaming within its chaotic depths.
He had not recognized what kind of Dao-unification Immortal Seed it was, but he could tell it was extraordinary. Moreover, he had vaguely sensed that this Dao-unification seed was destined for him, as though it had been made expressly to fit him.
Thus, he had chosen without hesitation to fuse with this chaos sea seed. This Immortal Seed was immensely powerful, and it had played a crucial role in Qin Feng's attainment of the Supreme Realm within fifteen hundred years.
The other Dao-unification seed had been a proto-universe seed. Qin Feng had originally intended to exchange it for some benefits, but after fusing with the chaos sea,
he had inexplicably felt that this proto-universe seed had another use for him, and that it held a great opportunity destined for him.
So he had kept it. After reaching the Supreme Realm and separating out this clone, Qin Feng had fused the proto-universe seed into it and had the clone walk the path of cultivation all over again.
His original body held the chaos sea, while his clone held the proto-universe. The two Immortal Seeds had actually formed some mysterious connection and begun fusing with one another.
They had also created a special resonance between him and his clone, along with a small, chaos-colored world.
The proto-universe seed had formed an innate spatial barrier and opened up a space, while the chaos sea had filled that space with chaotic energy. A miniature world of chaos had emerged.
With the clone fused to an Immortal Seed, it had become even harder for others to notice anything unusual. It was just like two separate people cultivating.
If the treasure art already had such effects in the Supreme Realm, Qin Feng could hardly imagine what it would become upon reaching the True Immortal or Immortal King realms.
What tremendous power might it possess in the Immortal Emperor Realm?
His technique was somewhat similar to the Desolate Heaven Emperor's Self-Manifestation Freedom Art. Though a weaker version, it had enormous potential for future growth.
After all, his cultivation was currently only at the Extreme Dao Supreme level. Once his cultivation rose further, this technique would display even greater effects.
And this Immortal King Edict calling for support for the Primeval Ancient Realm would serve as Qin Feng's final test. After all, the Edict-Bearing Divine General had said that there were two Extreme Dao Supremes here.