Laugh at!

The sharp aura was wrapped around the blade, even if the blade was not aimed at him, there was still a tingling sensation on Xia Xuan's skin.

At this time, after the tempering of the power of qi and blood, the skin of his right arm has been strengthened to a considerable extent, and ordinary mortal soldiers, even if they slash on his right arm, at most they will leave a white mark, but they can't let him see the blood.

However, at this time, after the opening of this key, even the blade had not yet arrived, Xia Xuan felt that the skin of his right arm was faintly about to be torn apart!

Such a dangerous feeling was never felt even when Fang Cai held the giant sword spirit soldier in his hand!

If just this can make Xia Xuan's body, which is far beyond ordinary people, feel the crisis, then what kind of destructive power will it reach if he really slashes it with all his strength?!

I'm afraid it's incomparable to ordinary low-grade spirit soldiers, right?!

A most crude and ordinary mortal combat knife, after using the key to open it, its terrifying degree can surpass that of a low-grade spirit soldier?!

This kind of promotion is inevitably too perverted!

Holding the hilt of the battle knife tightly, Xia Xuan could feel the subtle trembling sensation of the blade and a terrifying and tragic power!

He could feel that in this blade, it seemed that all the potential and power had burst out at this moment. It feels like a dying person gambling all his strength to die with the enemy!

Click!

Sure enough, almost as soon as Xia Xuan's thoughts fell, a dazzling crack burst open on the pitch-black blade of the knife and spread out.

However, the blade of the knife was broken, but the fierce determination on this sword did not decrease in the slightest, but became more and more terrifying!

Click!

The cracks spread rapidly, and after a while, they finally filled the entire blade! The sword shook violently, and it emitted a piercing sound, like the desperate roar of a dying man!

Boom!

Finally, in the next moment, the war knife could no longer withstand the horror of the complete outburst, and with a crisp sound, it directly exploded into pieces, and then before it hit the ground, it was as if it had been burned, shattered into powder, and disappeared.

Looking at the war knife that was completely shattered and dissipated, Xia Xuan's face swelled with a thick look of surprise, and in this surprise, there was a touch of ecstasy!

He never imagined that after opening the "door" of mortal soldiers, this key would be able to temporarily give them a powerful power comparable to that of spirit soldiers!

According to the mysterious voice, this key can open the door to the potential of all living things, so that is to say, the more powerful the potential of the existence opened by it, the more terrifying the power that erupts!

Moreover, the battle knives that Xia Xuan tested before were just the most low-level and crude mortal soldiers, and they had no potential at all.

However, even so, after opening it with a key, its power is comparable to that of a low-grade spirit soldier, and it is even better!

So what if you use the key to open a sharper weapon? How powerful will it be? Is it enough to fight against the medium-grade, high-grade, or even the best spirit soldiers?

That...... What if you start a real spirit soldier with a key, how powerful will it be?

"Hiss......"

Even if he simply thought about it, Xia Xuan gasped, and his heart was shocked, the ability of this "key" was inevitably too terrifying!

Compared to his terrifying ability, the two thousand spirit soldiers outside seemed a little insignificant. No wonder, in front of them, the spirit soldiers also had to bow their heads and bow their heads!

Exhaled lightly, relieving some of the vibrations in his heart, and then Xia Xuan pondered for a while, and then turned his hand, he took out a mortal weapon from the Qiankun ring, and then slowly put the key up.

In the secret room on the second floor of the Heavenly God Tower, waves of fierce energy fluctuations continued to emerge one after another, however, whenever these fierce energy surged to the peak, they would come to an abrupt end with a crisp cracking sound.

Within half an hour, such a fierce meaning, the rise and fall were repeated more than ten times, and finally after the twentieth weapon was shattered into powder and dissipated, Xia Xuan stopped.

The soles of his feet trembled slightly, and then his body became weak and he fell directly to the ground!

He never imagined that this "key" to open the door would consume Yuan Li so much! With his Yuan Li reserves, which can be said to be majestic, after using it only 20 times, it would be completely to the point of bottoming out!

He gasped heavily, and then Xia Xuan also shook his head a little helplessly, sure enough, if he wanted to use a strong force, he had to pay a considerable price.

You must know that Xia Xuan is not in a real state of battle, that is, he can only use this key to open the door twenty times, if in the fierce battle of life and death, the Yuan Force is consumed extremely quickly, the number of times he can open the door will also be greatly reduced.

It seems that even if this key is powerful, but if it is not able to make obvious achievements, this power to open the door cannot be used at will.

And this time, a lot of Yuan Force was consumed, and a full twenty weapons were consumed, and Xia Xuan could be regarded as having a somewhat simple understanding of the ability of this "key".

The ability of this "key" is actually quite simple and crude, that is, all the potential of all living things is transformed into combat effectiveness, in order to pursue the effect of increasing the destructive power to the limit in a short period of time.

However, in the end, the existence that is opened by the "key" will be destroyed and perished because it cannot withstand the sudden burst of powerful power.

According to Xia Xuan's previous experimental observations, ordinary mortal soldiers, after being opened by the "key", can only hold on for a short period of ten breaths, and they will completely break and shatter.

After bursting out of all their strength, the mortal soldier can only maintain it for a short time, which is a very obvious shortcoming.

Because when the mortal soldiers can't withstand the power of the "key" to open the door and are broken, then Xia Xuan will also enter a period of the weakest, and some people with rich combat experience may seize such an opportunity to solve Xia Xuan directly!

After all, everything in the world pays attention to a law of balance, and it is a bit unreasonable to have the power that can allow mortal soldiers to resist real spirit soldiers in an instant, and if it can still be used for a long time.

However, in fact, in Xia Xuan's own opinion, this short ten seconds of explosive power cannot be regarded as a real shortcoming.

Because, the ten breaths are very short, but they are also very long. In the middle of the battle, this short ten breaths is enough to divide a tangled battle into dozens of victories!

Xia Xuan may not be able to take advantage of the short and terrifying explosive power of this "key" after opening the door to launch a fatal blow!