At this moment, Si Cheng said that he officially declared war on the First Demon!

There are two reasons why Si Cheng declared war on the First Demon so quickly, the first and most important point is that the First Demon is also a god and demon, if he can defeat the First Demon, then the next thing is to go to the Demon Domain and kill all the gods and demons.

The second point is that in order to verify Tianwei, it was not used in the battle with the Five Elements Immortal Venerable, that is, Si Cheng was worried that Tianwei was too powerful, and the Five Elements Immortal Venerable had absolutely no chance of being spared, and the First Demon happened to be an object of verification.

Of course, there is actually a third point, as early as when I was in the cultivation world, I heard the legend of the First Demon, and even since ancient times, there have been gods and demons invading because of the First Demon.

Now that the First Demon has left the earth, Si Cheng naturally wants to come to ask for an explanation, at least for the First Demon, the cultivation world has been repeatedly invaded by gods and demons, and the entire cultivation world has been destroyed by thousands of holes.

Of course, this statement is not as simple as grinding his mouth, and Si Cheng does not disdain to do this, for him, how to discuss the explanation, the most effective and direct is to declare war.

"Oh, hehe......" Hearing this, the First Demon was slightly stunned, and then chuckled.

"I only have one move, as long as you can take it, I will answer your challenge, otherwise it will be death!"

"Okay! make a move!" Si Cheng said flatly.

The first demon's expression was cold, and then his right hand stretched out, and suddenly the rolling demonic qi directly diffused out.

"No! It's not demonic energy!" Seeing this scene, Si Cheng's expression moved, because the gas that diffused out was not demonic qi, or not all demonic qi.

Because in that gas there is not only demonic energy, but also immortal energy, which is a combination of two gases. It's just that the demonic aura is a little stronger.

The immortal and demon mixture gas diffused out, and then formed a big knife in the air, above the big knife, the demonic qi surged, and in the next moment, it shot towards Si Cheng with an unparalleled speed.

"Whew, what a fast knife!" tens of thousands of miles away, the Five Elements Immortal Venerable exclaimed.

"Not only fast, but also sharp and sharp, I don't know if Si Cheng can take it!" Fu Xi Luozun was also slightly surprised.

Hongjun's face was solemn, looking at the demonic qi dagger that was quickly heading towards Si Cheng, and he was worried about Si Cheng in his heart, because if it was him, he would definitely not be able to take it.

Although Si Cheng was hundreds of miles away from the Origin Demon, the speed of the big knife was approaching in a few breaths, and at this moment, Si Cheng's face changed slightly, and the speed of this knife was too fast.

"Divine power!

Si Cheng shouted, and a sword was cut out directly.

"Scandium!"

The sound of metal colliding sounded, accompanied by a loud bang, this loud sound even Si Cheng felt extremely piercing, and the cultivators in the distance roared in their ears, and many people spat blood directly from their mouths.

"Shhh

Yuan sighed directly, his mind was dizzy from this loud noise, and his ears were deaf, not only that, but he directly took more than a dozen steps back, and the blood and qi in his body surged.

Tongtian and Qingshi also withdrew a few steps, and their brains were buzzing, but they were undoubtedly much better than the original.

"It's so strong!"

Hongjun's face was solemn, the loud noise just now was that he was distracted for a while, but he recovered quickly, not only him, but Fu Xi and the Five Elements Immortal Venerable were all frowning, and their faces also became heavy.

"The First Demon is really powerful!"

A bloodstain appeared at the corner of Si Cheng's mouth, and just a collision just now made his brain roar, and his body turned over and over.

With just one blow, Si Chengcheng was injured, after all, this Origin Demon was a powerful existence that surpassed Immortal Venerable, how could he be his opponent with just one sword.

If it weren't for Si Cheng's strength in the Great Luo Middle Realm, if he hadn't had the fusion of divine power, he would have directly killed himself with the knife just now.

"Not bad! a little strength!" the first demon smiled faintly, the knife just now didn't even use thirty percent of his strength, but even so, it was extremely powerful, and not everyone could catch it.

"Hehe! yes, then I should really feel honored!" Si Cheng said with a smile.

"Yes, you're still honored, because I have only one opponent, and you're far from it! ”

"Retreat?" Si Cheng was slightly stunned, and then said: "I won't retreat, I once swore to kill all gods and demons, and so are you!"

"Hmm, kill all the gods and demons, boy, do you know the consequences of telling me this?" said the First Demon's face sank, and he said coldly.

"I don't know what the consequences are, but I have to live up to the vows I have made. Si Cheng shook his head and said.

"Good! In that case, then I will fulfill you and see how you kill all the gods and demons!"

"Magic Knife Two Style!"

As soon as the words of the First Demon fell, a large knife appeared in the air again, and this time the big knife was ten times larger than the last time, and the demonic energy on it was monstrous.

"Boy, die!"

"Retreat!" Tens of thousands of miles away, Hongjun Immortal Venerable saw the big knife that appeared again, and before he could fully recover from the shock just now, he immediately let out a loud shout, and then quickly retreated farther away.

The big knife roared past and went straight to Si Cheng, Si Cheng was also horrified at this time, this knife gave him a feeling of being incomparable.

"Divine power! Eighth Form!"

"Divine power!

In the face of this knife, Si Cheng fired two moves together, and after a punch was blasted, the power of the ten elements exploded directly in the air.

"Boom ......"

There was a loud bang that shook the earth, and countless planets in the entire galaxy collapsed directly, although these were only small death stars, but it was enough to prove the power of this collision.

Si Cheng flew directly upside down, crashing into a death star with a bang, and in the next moment, the death star directly collapsed and was completely destroyed.

"Poof!"

Si Cheng spurted out a mouthful of blood directly, this Origin Demon was too strong, and with just two swords, he let himself be seriously injured.

"It seems that we can't do this anymore, we must use the strongest trick!" Si Cheng wiped the blood from his mouth and looked at the First Demon with a solemn expression.

"Huh, it's next?" Seeing Si Cheng, the first demon was surprised, his second sword used nearly fifty percent of his strength, but even so, Si Cheng still followed.

"Okay! Then try the Magic Knife Three Styles again!"

"Bang!"

A sound sounded directly in the air, and then a huge and incomparably large demonic qi knife appeared in the air, and then slashed directly towards Si Cheng.

"Not good!"

In the face of this knife, Si Cheng's face changed, because this knife was too terrifying, and the immortal and demonic qi emitted by the light had reached an unprecedented strength.

"The Way of Heaven!

Si Cheng shouted, at this moment, the thunder that had not been used for a long time came out again, and suddenly, a huge thunderbolt appeared directly in the air, and with the addition of the way of heaven, a powerful and terrifying energy roared out directly from the thunder.

And this is the Tianwei that Si Cheng has not used for a long time, and as soon as Tianwei comes out, it is extremely powerful.