The first test did not cause any obstacles to Shi Feng at all, but instead made Shi Feng's strength improve.

"Not bad. ”

The corners of Shi Feng's mouth rose, and Shi Feng raised his eyes directly to look at the second door.

When Shi Feng stepped into the second door, the area that appeared was slightly smaller, and the number of Black Flame Demon Clans inside was only eight.

The two strange beasts, with huge bodies and slightly bent limbs, were staring at Shi Feng deadly.

Behind the two alien beasts, there was a Black Flame Demon Clan with a height of about three meters, and these six Black Flame Demon Clans had different weapons in their hands.

Two of them held black maces, two held large black bows, and the last two held staffs.

"The cooperation of the elite team?"

Shi Feng stared at the Black Flame Demon Clan, the corners of his mouth rose slightly, this time the eight Black Flame Demon Clan did not take the initiative to make a move, and also looked at Shi Feng.

"The strength has improved a lot, I'm afraid it has reached the realm of Emperor Wu, but this is not enough. ”

Feeling the momentum on the other party's body, Shi Feng moved first.

I saw Shi Feng's feet on the ground in turns, and the speed exploded instantly, and a punch slammed out.

At the moment when Shi Feng made a move, the two strange beasts in the front let out a roaring sound, and their bodies suddenly jumped out, killing directly towards Shi Feng.

At the same time, the two Black Flame Demon Clans with maces in their hands also slaughtered towards Shi Feng.

At this time, there are arrows galloping forward.

"It's a very subtle cooperation, but after not being afraid of the black flame on your body, as long as your strength can be crushed, you are no different from ordinary people. ”

Shi Feng's eyes were cold, and his speed exploded to the extreme.

Shi Feng's speed, how could these Black Flame Demon Clans keep up, first those two strange beasts were killed by Shi Feng's fierce fists, and then the two Black Flame Demon Clans holding maces were also killed by Shi Feng on the spot.

And the arrows that galloped towards didn't touch Shi Feng at all.

When the two Black Flame Demons with big bows in their hands wanted to bend their bows and arrows again, Shi Feng's fist had already smashed them.

There was a loud bang, and now only the last two Black Flame Demons remained.

The two Black Flame Demon Clans, holding magic staffs, were casting spells, but it was difficult for them to complete their spells at all, and they were also killed on the spot by Shi Feng.

"Cool. Shi Feng once again absorbed the power of these Black Flame Demon Clans, and the look in his eyes was even more happy.

Where is this test, it is clearly a great gift to Shi Feng.

Of course, Shi Feng also understood that if it weren't for the strange fire and blue flames on his body, if it weren't for the God Slaughter Sword, he could also absorb the black flames and feed back to himself, it would be impossible for him to be so relaxed.

The Black Flame Demon Clan, judging from what Shi Feng has seen so far, the most terrifying thing is the black flame on his body.

And after Shi Feng was not afraid of the black flames, the Black Flame Demon Clan did not have half an advantage in front of Shi Feng.

"The third door, I wonder if there are any surprises?"

After passing the second test, it still did not make Shi Feng have half a point of consumption, but instead allowed Shi Feng's strength to improve again.

Soon, Shi Feng had already walked in front of the third door.

Next, it's time for the final test.

Shi Feng took a few deep breaths, and then stepped out again.

Just a few minutes later, there were two more corpses at Shi Feng's feet.

The test in the third door did not bring any surprises to Shi Feng, just two Black Flame Demon Clans with stronger realms.

The Black Flame Demon Clan in the late stage of Tianzun had more powerful black flames on his body, but it was difficult to form an effective attack on Shi Feng at all.

All things are mutually reinforcing, and the Black Flame Demon Clan is a nightmare for many cultivators, but because Shi Feng has the God Slaughter Sword and the Blue Flame, after fusing the Blue Flame and the Black Flame, Shi Feng has been able to restrain the Black Flame Demon Clan's greatest advantage.

When Shi Feng absorbed the corpses of the two Black Flame Demon Clans, the figure of Jin Toad Zhenjun reappeared.

"Kid, it seems that you have given me a lot of surprises, although I don't know how you made it to this level and killed the last Black Flame Demon Clan, but I think you have found your own way. ”

"But if you want to fight the Black Flame Demon Clan more easily, there is one more thing you need to do. ”

"There is also a door here, behind the door, I have arranged a forbidden space, which contains black flame crystals, which are equivalent to the spirit stones used by human warriors to cultivate, but they are also a material used by the black flame demon clan to build blades. ”

"I don't have time to do too much research on the Black Flame Crystal, so I'll leave this matter to you, as long as you master the mystery of the Black Flame Crystal, you can completely eradicate the Black Flame Demon Clan. ”

Speaking of this, Jin Toad Zhenjun paused, and his expression became a little more solemn, "Child, there is one thing you must remember, the black flame crystal, has strong assimilation, if you want to take it outside, you must arrange a forbidden formation." ”

"Otherwise, the rocks, plants and trees that the Black Flame Crystal comes into contact with will be assimilated in a very short time and become a new Black Flame Crystal, which is also one of the reasons why the Black Flame Demon Clan can be strong quickly. ”

"I've already made some attempts on the Black Flame Crystal, and it's difficult for human warriors to directly absorb the power inside, and even when they come into contact, they will be injured, so you have to be extremely careful not to touch them directly with your hands. ”

"Kid, that's all I want to say, I hope that one day, you can really directly make the Black Flame Demon Clan disappear into this world. ”

As Jin Toad Zhenjun's words fell, his figure gradually faded again, until he disappeared.

"Black Flame Crystal?" Shi Feng frowned slightly, then looked at the door.

When Shi Feng pushed open the door and walked in, a look of ecstasy immediately appeared in his eyes.

"This ...... It's the Black Flame Crystal!"

I saw that in front of Shi Feng's eyes, there was a black flame crystal the size of a grinding disc.

When he heard Jin Toad Zhenjun say it just now, Shi Feng had already guessed, and Shi Feng guessed correctly.

Black Flame Crystal, which is the material that makes the God Slayer Sword excited, is also a special material added to the weapons in the hands of those Black Flame Demon Clans.

On the pitch-black flame crystal, black flames danced, and there was surging power in them.

This kind of power can't be used by others, but Shi Feng can use it.

I saw Shi Feng striding forward and pressing directly on the Black Flame Crystal with one hand.

The black flame crystals the size of the grinding disc actually became smaller at a speed visible to the naked eye.

"Cool. Feeling the growth of strength and the excitement of the God Slaughter Sword, Shi Feng's face became even more joyful.

However, Shi Feng still resisted the intention of directly absorbing this black flame crystal.

"Strong assimilation, Jin Toad Zhenjun shouldn't lie to me. ”

There was nothing else here, Shi Feng directly picked up the Black Flame Crystal, and then walked out.

Soon, Shi Feng had already entered the small world of the Nine-Story Building.

When Gu Chongjin and the others saw Shi Feng appear holding the Black Flame Crystal, their faces changed.

The power emanating from the black flame crystals made them all feel a little palpitation.

Shi Feng didn't care to explain to everyone, first came to a mountain, arranged a small forbidden formation, and then put down the black flame crystal.

"Sure enough......"

When the black flame crystals came into contact with the nearby mountain stones, those beating black flames directly covered those mountain stones, and the speed of the mountain stones was also extremely fast.

"This, if you follow this conversion speed, I'm afraid that in less than a day, you will be able to have a piece of Black Flame Crystal of the same size again. ”

At this time, the look in Shi Feng's eyes was even more happy, the power in the black flame crystals had greatly improved Shi Feng's cultivation speed, but the greater benefit was that it could speed up the God Slaughter Sword to the next stage.

Through the feedback of the God Slaughter Sword, Shi Feng knew that as long as he absorbed three black flame crystals the size of a grinding disc, the God Slaughter Sword could smoothly enter the next stage.

Able to be carried by Shi Feng with him.

According to the assimilation speed of the Black Flame Crystal, it is only two or three days.

"Holy Sword Sect, Elder Liuhe?"

The corners of Shi Feng's mouth showed a touch of upward arc.

Shi Feng was happy that he was about to have the ability to break through the defense of the Liuhe Elders, but he was even more ecstatic because after the God Slaughter Sword entered the next stage, it could give Shi Feng a hint and judge those who had the power of faith.

At that time, it would be much easier for Shi Feng to find believers in the Holy Spirit.

At this time, Shi Tianyi and the others had already gathered around, and seeing the smile on Shi Feng's face, Shi Tianyi hurriedly asked, "Brother, what kind of treasure is that?"

Shi Feng immediately briefly talked to everyone.

Hearing that Shi Feng was about to become stronger, everyone was naturally very happy.

At this time, Shi Feng looked at Gu Chongjin, "Old Gu, I'll use that sword first." ”

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