X-Dragon Era

As of now, the Four Great Innate Treasures can completely disregard attacks and defenses of the bronze tier, being sharp everywhere and unrivalled in combat. Once they come across opponents of the silver tier, the Four Great Innate Treasures can still hold their ground. While they won't have the upper hand, they will not suffer losses either.

From this, one can see the formidable power of these four supreme treasures.

It was learned from the Axe Soul of the Sky-opening Axe that after absorbing a hundred tons of various metals, the Sky-opening Axe had unsealed one layer. It has a total of ten layers, and only after completely unsealing all of them will it be possible to restore all the functions of all its parts, allowing the Sky-opening Axe to regain all of its abilities during the creation of the world.
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But this does not equate to being fully unsealed; it only restores all abilities, and there's still a significant difference in power. Ten more layers must be unsealed for it to completely return to its state at the time of creation. The amount of materials needed for this is simply incalculable.

For the first ten layers, the materials needed for each subsequent layer are a bit more than double those of the previous one.

To unseal the first layer, a hundred tons of the five metals are required, the second layer would need two hundred tons of each, the third layer five hundred tons, the fourth layer a thousand tons, the fifth layer two thousand tons, the sixth layer five thousand tons, the seventh layer ten thousand tons, the eighth layer twenty thousand tons, the ninth layer fifty thousand tons, and the tenth layer one hundred thousand tons!

After unsealing up to this point, all the functions of each part are restored, but the power is only at its most basic. From here on, every layer unsealed requires ten times the materials of the previous one, namely a million tons, ten million tons, a hundred million tons... The materials needed to completely unseal it are simply incalculable.

Moreover, using these Four Great Innate Treasures is not without energy consumption. Defensive items like the Taiji Diagram and Chaos Bell are better off, as once activated, the cycle of yin and yang only needs very little energy to maintain. However, the Zhu Xian Four Swords and the Pangu Banner require a substantial amount of energy to operate.

The Sword of Executing Immortal is manageable, as long as the four swords are not unleashed together, the energy needed is not too great. But without the Union of the Four Swords, they do not count as the true Zhu Xian Four Swords. Only when the four swords unite can they unleash boundless power; individually, they are nothing more than treasure swords with particular features.

If Xin Yun were to wield a single sword, he could do so now. Sharpness, keenness, speed, strength, agility—he would have it all. No matter the opponent, there would always be one sword that could overcome them, and he could use it freely. But if the four were to come out together, Xin Yun wouldn't be able to sustain it for even a second, or might not even be able to unleash it at all.

Then there's the Pangu Banner, which consumes eighty percent of one's energy to wave for a minute, only to produce a strand of Chaos Sword Qi about over ten centimeters long and as thin as a hair. Except for extremely special circumstances, this is practically useless!

However, the Pangu Banner has more than this single use. When the world was created, the Sky-opening Axe was shattered, not only the blade breaking into four pieces, but also the handle into twelve rods, each bearing a dark flag.

Looking at the Pangu Banner in his hand, an idea flashed through Xin Yun's mind; the Pangu Banner instantly disintegrated, turning into twelve dark black flags. Looking towards the surface of the flags, the dark radiance seemed to even absorb the soul.

From the Axe Soul, Xin Yun learned... these twelve flags are named the Twelve All-Heaven Flags and can be used to arrange the Twelve All-Heaven Divine and Evil Formation. However… at the moment, these flags are merely empty husks without any power.

To empower the flags, one must use these flagpoles to kill, stabbing them into the bodies of enemies. The flesh and souls of enemies will be absorbed into the flag, where, nourished by blood and flesh, the souls will reconverge within the flag, becoming the Banner Spirit!

Once a flag has a Banner Spirit, it can be released to combat. As long as the flag remains intact, the spirit stays immortal. Even if defeated, it would simply return to the All-Heaven Banner and, after some time, could reappear.

When a flag has two Banner Spirits, they will fight each other. Only one can remain on a single flag; the loser is devoured, digested, and absorbed by the victor. It absorbs the strengths of the vanquished, discarding the weaknesses, resulting in a new evolution. Through continuous slaughter, the Banner Spirit will become increasingly powerful, and its evolution more advanced!

The twelve Banner Spirits can not only attack individually but can also merge together. With the twelve All-Heaven Flags as the medium, the twelve Banner Spirits can merge into one, forming the strongest composite being, with a twelvefold increase in power and omnipotent capabilities. Its power is determined by the number and quality of creatures devoured.

Looking at the twelve black flags in his hands, Xin Yun's mouth hung wide open. Without a doubt, these were the so-called All-Heaven Netherworld Banners. Only the All-Heaven Netherworld Banner can set up the All-Heaven Divine and Evil Formation, and in its ultimate form, it can even condense the most perfect version of Pangu's True Form!

No wonder no one had ever known whose hands the All-Heaven Netherworld Banner was in. It turns out... the All-Heaven Netherworld Banner and the Pangu Banner are inherently one and the same, two sides of the same coin. Merged together, they make up the Pangu Banner; taken apart, they become the All-Heaven Netherworld Banner.

The true Pangu Banner, in the hands of the Primordial Heavenly Venerate, absorbed a sufficient amount of Pangu's Essence Blood the day the world opened. Thus, it naturally could summon the Twelve Ancestral Witches and inherently congregate Pangu's True Form. But Xin Yun's banner is different; the Axe Soul absorbed nothing, so...

to bring forth the power of this set of All-Heaven Netherworld Banners, one must engage in slaughter, devouring the Essence Blood of various creatures to nourish the Banner Spirits and gradually enhance their power.