So far, Ling Feng has never encountered a fire-based technique that is better than the Phoenix Tribulation Heart Technique.

In Lingfeng's opinion, in a high-level space like Tianmeng World, the fire-based skills created by those powerful people should be more advanced than Phoenix Tribulation, but he has not found such skills in Tianmeng World yet.

Law.

Ling Feng knew that the Shenhuang Realm was just a small holy world, and the rules were incomplete. The native life forms in the Shenhuang Realm were unable to create such advanced techniques as the Phoenix Tribulation.

Therefore, the Phoenix Tribulation Secret Technique must have been created by those practitioners in the advanced world.

With the help of the Phoenix Tribulation Secret Technique, Ling Feng was no longer afraid of the high temperature around him and accelerated towards the front.

Soon, Ling Feng came to the purple flame area.

The temperature of the purple flame area is much higher than the temperature of the blue flame area.

Even with the help of the Phoenix Tribulation Secret Technique, Ling Feng still felt a little stuffy.

Ling Feng gritted his teeth and continued flying towards a place with higher temperature.

Finally, Ling Feng found a cave entrance in the purple flame area, and inside the cave entrance, a large amount of purple flames erupted.

The purple flames erupting from the hole are even hotter.

"I wonder what the temperature is inside this cave?"

Ling Feng looked at the fire-belching cave and thought to himself.

Then, Ling Feng gritted his teeth and flew into the hole that was spewing fire.

After entering the cave entrance, Ling Feng immediately felt strong resistance, which came from the flames spraying at high speed inside the cave entrance.

Ling Feng flew towards the depths of the cave entrance against the flames sprayed at high speed.

The deeper you go into the cave, the purer the power of the flame becomes.

The power of these flames was absorbed into Lingfeng's body and then transformed into the power of the Phoenix.

Ling Feng walked through the cave for half an hour, and finally he came to a huge underground space.

In this underground space, Lingfeng saw many crystal stones.

"These crystals are all purple, but inside the purple crystals, there are masses of silver liquid!"

"This is the Liquid Silver Mysterious Fire Crystal!"

After seeing these crystal stones, the spirit crabs immediately cheered.

This Liquid Silver Mysterious Fire Crystal is considered to be the best fire treasure in Tianmeng World.

The spirit crab immediately landed on those liquid silver mysterious fire crystals and struck them with its pliers.

This underground space is very large, with a diameter of more than a hundred miles.

In the core area of ​​these flowing silver black fire crystal veins, there is a tree root about half a meter long.

This tree root is red, with some liquid flowing inside, and those liquids seem to be condensed from countless mysterious patterns of laws.

A special rhythm emanates from this tree root.

The spirit crab opened his mouth and said to Ling Feng: "Ling Feng, there is a piece of innate fire spirit root underneath!"

"The reason why there is such a vein of flowing silver black fire crystal here is because of this innate fire root!"

The spirit crab looked very excited at the moment.

Innate Fire Spirit Root is a rare treasure even in an advanced world like Hunyuan Continent.

In Hunyuan Continent, generally treasures with the word "Xiantian" in front of them have existed since the beginning of the world.

This kind of treasure can be encountered but cannot be sought, and it is very precious.

Ling Feng didn't expect that there was an innate fire root under the Colorful Flame Mountain.

"Ling Feng, can we dig out this innate fire spirit root?"

Ling Crab asked Ling Feng.

Ling Feng walked up to the Liuyin Xuanhuo Crystal, and then punched a piece of Liuyin Xuanhuo Crystal.

"boom!"

The Liquid Silver Mysterious Fire Crystal vibrated slightly, and Ling Feng felt a powerful counter-shock force transmitted to his fist.

He frowned slightly, then opened his mouth and said to Ling Crab: "This Liquid Silver Black Fire Crystal is too hard, I can't break it at all!"

The purple flame area of ​​the Colorful Flame Mountain can only be entered by those seven-star experts who are good at the original law of fire.

But in this cave, even those seven-star strong men may not be able to withstand it.

Although Lingfeng could withstand the terrifying heat in the cave with the help of the Phoenix Tribulation Secret Technique, the Phoenix Tribulation Secret Technique could not increase Ling Feng's attack power.

And the hardness of this Liquid Silver Mysterious Fire Crystal is such that even a seven-star strong person cannot break it.

The innate fire spirit root is at the core of the Liuyin Xuan Fire Crystal vein. If Ling Feng cannot split the Liuyin Xuan Fire Crystal vein, he will not be able to collect the innate fire spirit root.

Moreover, Ling Feng also knew that the fire spiritual power contained in the innate fire spirit roots was very strong. He still didn't know how to collect the innate fire spirit roots.

He said to the spirit crab: "I am cultivating here now. As for the innate fire spirit root, we will go into Tianwu City to see if there is anything we can do!"

"That's fine! Then I'll study the Liuyin Xuanhuo crystal vein first and see if I can find anything out!"

The spirit crab responded, and then it crawled around in the underground space and began to study.

Lingfeng took out the Nine-Dragon Divine Fire Furnace and got into the Nine-Dragon Divine Fire Furnace.

After entering the Nine Dragons Divine Fire Furnace, Ling Feng immediately took out the treasures from Tianwu City, and then put some special elixirs into the incense burner together with the fire elixirs he collected on the Colorful Flame Mountain.

Start using the incense burner to strengthen these elixirs.

Because Ling Feng knew that these elixirs were very special and very high-level. Many elixirs were not available in Tianhen Continent or even in the entire Tianmeng Continent.

Because Ling Feng's consciousness has been practicing with the Chaos City Lord for a long time in the Chaos Sky Monument, and the Chaos City Lord is also very talented in alchemy and medicine refining, and has extremely high attainments.

Therefore, in the consciousness space of the Chaos Sky Monument, both Ling Feng and Ling Crab learned a lot.

Ling Feng knew almost all the reward items he received in Tianwu City.

After Lingfeng put these elixirs into the incense burner, he used the Phoenix Tribulation Heart Technique with all his strength to absorb the surrounding energy.

At the same time, Ling Feng also used the Chaos Heavenly Book mind method.

The power of the stars in the sky gathered above the Colorful Flame Mountain, directly passed through the barrier of the Colorful Flame Mountain rocks, and entered the underground space.

The power of the stars is everywhere.

The power of these stars are all converging towards Ling Feng. In addition to the power of the stars, there are also various sources of power.

Most of the energy that entered Ling Feng's body was absorbed by the incense burner, and a small part of the energy was absorbed by Ling Feng's foundation building platform and body.

Half a year later, Lingfeng felt that the incense burner no longer absorbed energy.

"Saturated?"

Ling Feng scanned the inside of the incense burner with his spiritual consciousness.

He found that the treasures inside the incense burner had some purple secret patterns on their surfaces.

These purple secret patterns should be related to the purple flames in the underground space.
Chapter completed!