Inside the Tenjin Tower.

A black shadow swept back and forth in the rather spacious place on that floor, and waves of violent energy emanated from his body, as if a tyrannosaurus was in action.

And in the palm of his hand, a pitch-black war knife also exuded incomparably tragic and devastating fluctuations, and when it was waved by the black shadow, it would directly cut through the air, and there was a burst of piercing sounds.

Holding the battle in his hand, the war knife suddenly swirled sharply in the palm of his hand, and then the black shadow turned around, and the black war knife was slashed out by him, turning into a black shadow, directly stirring the air, forming a knife wind that almost condensed into substance, roaring out dozens of meters, directly shaking and exploding the air there, and then it slowly dissipated!

The power of this sword is quite terrifying, enough to directly blast a martial artist of the Yuan Envoy Realm to the point of losing his combat effectiveness!

Boom!

And when this knife was swung out, the war knife in the black shadow's hand also let out a fierce roar like a wail, and then, one after another cracks spread rapidly, and the pitch-black Yuan Force suddenly tore out from its blade, completely shattering and dissipating it!

As the sword in his hand shattered, the figure also let out a breath of turbidity, shook his head as if he was a little dissatisfied, and then sat down cross-legged.

This figure is naturally Xia Xuan, who is staying in the Heavenly God Tower and cultivating penance.

Today is already the ninth day that Xia Xuan has entered the Heavenly God Pagoda to practice.

In addition to the necessary daily training of combat skills, Xia Xuan devoted almost all of his energy and time to tempering and trying to master the "key" to open the door.

The "key" can make some ordinary mortal soldiers within ten breaths, and the destructive power is enough to compete with the spirit soldiers. This kind of power is quite terrifying, but it is also very difficult to master.

Because of the ten breaths, in a truly fierce battle, it is long to say, and very short to say!

If you don't control the time of this "key" energy well, once you miss the ten breath time, it may make De Xia Xuan fall directly into a desperate situation from an absolute advantage, especially when facing a tricky opponent with a genius level like Wu Bai.

Before, in the battle with him, Xia Xuan missed the ability time of ten breaths, so the battle was not over, and the battle knife in his hand was directly broken, so that he instantly fell into the former's crazy attack, and even almost lost his life because of it!

If it weren't for the fact that his Divine Hidden Step had undergone the transformation of the Heavenly God Tower's martial arts light and shadow, compared to the combat skills before the transformation, he could create one more real illusion, and he seized this opportunity, thus severely damaging Wu Bai in one fell swoop, otherwise the outcome of that battle would be two words at all.

Therefore, Wu Bai is indeed an extremely troublesome opponent, and the reason why Xia Xuan was able to win the battle was not only his strength, but also luck that took up a large part.

However, he was able to have such good luck last time, but not necessarily next time.

Just like the old man Xia Cang said, this world is very big, there are countless geniuses and ghosts, and there are countless young people who can compete with Wu Bai, and even stronger than him, it is not impossible in this world, when the time comes, if he is against this level of existence again, then ...... The defect of not being able to perfectly control the time of the key's ability will make him unrecoverable!

He has obvious defects that can be easily attacked, with Xia Xuan's cautious character, how could he allow it to exist.

Therefore, in the past nine days, Xia Xuan has been frantically mastering the ability of this "key", striving to achieve ten breaths of time, perfect and accurate control, and no deviation from a single breath!

After all, in a real battle, not to mention a breath of time, just one-fifth of the time is enough to determine the outcome of a life-and-death battle.

And after these nine days of almost crazy tempering, Xia Xuan's mastery of the "key" ability has also made great progress, and in his cultivation, he has almost been able to accurately control the time of ten breaths, after all, his powerful soul power cultivated by the Heavenly God Technique makes his control speed for such control far beyond ordinary people!

However, Xia Xuan himself was not satisfied with this.

Because the real battle and cultivation are completely different, during the battle, your spirit will all be gathered on the opponent, there is no way to be distracted and count down the ten seconds in your heart, there is less oppression of life and death, with Xia Xuan's ability, it is naturally much easier to accurately control the ten breaths, but after all, it will not be on the table, in the real battle, it is not vulnerable at all!

"It seems that there is still a long way to go before you can fully control the power of the key......"

Sighing lightly, Xia Xuan shook his head a little helplessly. What he needs is to be able to control these ten breaths of time and turn it into his own instinct, so that he can be comfortable in battle.

"Take your time, there's still some time before the bar mig. ”

muttered softly, Xia Xuan's eyes also flashed with coldness, and his requirement for himself was that within these two months, he must control the power of the "key" to the extreme.

Xia Fei.

Xia Xuan also has a good understanding of himself, the opponent he will face in two months, in the past half a year, he has made rapid progress, but he will definitely not stand still.

If he wants to defeat him and regain the position of the young master, Xia Xuan will definitely fall into a bitter battle, so at this time, he must constantly replenish his hole cards so that he can have enough power to win at that time!

And, obviously, the ability of the "key" is enough to be called a powerful hole card, as long as Xia Xuan can grasp it thoroughly, its already terrifying combat power will be raised to another level!

Exhaling lightly, Xia Xuan also slowly suppressed his somewhat agitated emotions. Although he was not very satisfied with the progress of the cultivation of the power of the "key" during these nine days, he was already very satisfied with the results of this overall retreat.

Because now that Xia Xuan has broken through to the Triple Heaven of the Yuan Envoy Realm, his physical body has also made great progress, and the bone of his right arm has been completely tempered by the power of qi and blood, so for a combat skill like the Million Heavenly Fist that tests the strength of the physical body, he is a little relaxed in his cultivation.

In just nine days, it has broken through to the point of eight rings, and for the ninth ring, he also faintly touched a little way, feeling that if he wants to break through, I'm afraid it's just a matter of time and perception!

The eight resounding strengths of the Million Heavenly Fist, the eight forces superimposed on each other, combined with Xia Xuan's already extremely terrifying ferocious power, the terrifying power that erupted, even as the person who performed his combat skills, Xia Xuan felt a little dumbfounded!