The underground cave is very large, and the entrances of each cave are covered with stars. If you are not careful, you will definitely be lost in it. If it weren't for the platypus leading the way, Haoren would not dare to walk around easily.

The more he walked in, the dimmer the light in the cave became. A circle of flames suddenly burst out from the neck of the platypus, and Haoren staggered along the flames.

After walking for about a quarter of an hour, Haoren followed the platypus and came to a very empty cave. When countless clusters of flames rose up to dispel the darkness, Haoren was startled again.

There were platypus standing around the cave. In addition to the reptile platypus on all sides, there were also a small number of platypus on both legs. They were stronger than ordinary platypus and had more flames on their bodies, which seemed to be the heads of this population.

Haoren's arrival caused a series of screams from the platypus, as if they were discussing something with each other, and then they all calmed down after a few minutes.

The leading platypus standing with two legs walked forward and screamed at Haoren a few times. Of course, Haoren couldn't understand at all. The platypus seemed a little disappointed, stretched out his claws and pointed at the cave.

Haoren carefully stepped forward and observed the rock wall above with the firelight. He found that there were countless murals painted on it, and the next to the murals were engraved with words as big and small as tadpoles.

The rock walls here are extremely flat and smooth. Even after countless years of changes, they are still as clean as before in this closed cave. This is obviously not something that can be formed naturally, but carved by highly developed civilization races.

The mural depicts a very huge city. Every building, every street, and even every person in the city is so lifelike. Some buildings can be vaguely distinguished as factories or residences, while others cannot see their purpose at all. This is a very complete city, with food, clothing, housing and transportation, all kinds of food, clothing, housing and transportation.

This is obviously not a modern city. Haoren was completely attracted by this vast prehistoric civilization mural, and couldn't help but be amazed.

The murals show every corner of the city, making people feel the vitality of the city. However, when the murals are halfway through, the content begins to change.

In a corner of the city, a round door appeared out of thin air, and countless hideous and strange creatures swarmed out of the door. These creatures were extremely numerous and swept across the entire city in the blink of an eye.

Even standing in front of the cold mural, Haoren seemed to be able to feel the despair and fear of the people in the mural. The mysterious creatures tore everyone apart and swallowed them into their stomachs. All the buildings were razed to the ground, and the entire city was burning, and the black smoke even blocked the sun.

The soldiers in the city were fighting to the death to resist the attack of mysterious creatures. Their combat power was very strong. They could easily destroy monsters in one-to-ten or even one-to-one, but the number of monsters was too large, and often thousands of monsters launched sieges on a warrior at the same time.

The soldiers guarding the city were finally outnumbered, with fewer and fewer people, until in the end, there was only a white-haired old man left. The old man was full of sadness and despair. He stood on the tallest tower in the middle of the city, holding a strangely shaped staff and reciting something in his mouth.

On a volcano next to the city, a column of fire suddenly soared into the sky, and the magma mixed with various gray-black toxic substances poured into the city.

Finally, along with all the monsters, the entire city was completely destroyed in thick volcanic ash.

The mural ended completely, but Haoren couldn't calm down for a long time. Judging from the buildings in the mural, the level of development of this civilization is definitely not inferior to that of today's humans, but in the end he had to die with the monsters.

"These are probably dark creatures!" Haoren murmured to himself, his mouth full of bitterness. There were several rows of very small fonts next to the mural. Unexpectedly, Haoren actually recognized these words.

That's right, this is the civilization of the Earth, which is the so-called fourth civilization era. Haoren, who has just changed to a junior language teacher, has barely been able to recognize this kind of text.

"We are destroyed by the hands of darkness, but I am never willing to let our race lose its most precious crystal in thousands of years. Therefore, I leave the scroll of fire here. The scroll of fire is the root of fire in the world. The sect of all fires, I hope that future generations can continue to spread it."

At the end of the mural is a metal box. The metallic luster on it has dimmed after hundreds of thousands of years, but the box itself is not damaged at all. Haoren couldn't help but reach out to take the box and opened it carefully. There was only a scroll in the box. The scroll was made of. It was made of heavy and smooth, and it could be preserved after tens of thousands of years.

The scroll was also written in the fourth civilization era. When Haoren unfolded the scroll, countless content suddenly surged into his mind, as if he wanted to stuff all the words in the scroll into his mind.

After a moment of dizziness, Haoren gradually woke up and looked at the scroll again. He found that it was already empty. When he touched it with his hand, the scroll turned into powder and disappeared into the air.

Successfully fuse the Heart of Fire, currently level LV1, you can learn more advanced spells in the Scroll of Fire.

Haoren was confused and didn't quite understand what the so-called Fire Heart was, but when he glanced at his state, he was surprised to find that there was a Fire Sword Qi below the sword Qi value.

Fire Sword Qi: converts ordinary sword Qi into Fire Sword Qi in a ratio of 10 to 1, with more powerful attack power and flame attributes.

After a long time, Haoren gradually clarified his clues. The city in the mural belonged to a branch group in the Fourth Civilization Era. This group is famous for its skill in fire. The scroll of fire is the crystallization of wisdom, the heart of fire that has been in this group for thousands of years.

Haoren didn't understand what the Heart of Fire was. It seemed to be an invisible thing. It merged into his body as soon as it was opened, subtly changing his physique. For example, there was an additional sword energy of fire, and for example, he found that his flame resistance actually increased by 20 points.

The flame scroll copied the various superb fire spells of this ancient clan, which are based on the fusion of the Heart of Fire. When Haoren's Heart of Fire is increased by one level, he can learn an additional spell from the scroll. It is very difficult to increase the level of the Heart of Fire, and it is definitely not easy to upgrade by using it a few more times.

It is already the Heart of Fire of LV1. As a gift, Haoren has already learned the first spell, the Wings of the Fire God from the scroll!

The spell itself is unselectable, and can only be understood at random. Although Haoren felt that it was a bit tricky, after reading the introduction of the Wings of the Fire God, he immediately smiled.

The Wings of Fire God: Condensed with the sword energy of fire to form the wings of flame. Every time it lasts for one second, a little sword energy of fire is consumed. When the sword energy of fire is consumed, the Wings of Fire God disappear.

Although he did not have any attack and defense capabilities, or even any attribute bonus, this skill made Haoren so excited that his heart was beating and he couldn't wait to use it on the spot.

His current total sword energy value is 200, and he will convert it into 20 ignition sword energy in a ratio of 10 to 1, and then gently recite: "Wings of the God of Fire!"

The air suddenly became extremely hot, and the fiery red sword energy gushed out from the body, wrapping around Haoren. Only a slight sound of "Peng" was heard, and a pair of fiery red wings suddenly spread out from Haoren's back, and layers of flames flowed from the feathers.

Haoren was inexplicably surprised. He didn't expect that he would actually grow a pair of wings. He controlled the fire wings and stoke them. His body suddenly rose into the air, flying and hovering in the air, drawing brilliant red arcs.

"Haha! I can fly, I can fly!"

Haoren danced with excitement in the air, flying back and forth in the cave, forgot about time, and the 20-fire sword energy only took 20 seconds, and soon the fire sword energy was squandered.

Plop!

The Wings of the Fire God suddenly turned into sparks and dissipated in the air. The smile on Haoren's face stopped abruptly. He was stunned for a half-second, then fell to the ground with a 200-point damage value above his head.

He got up in pain, and Haoren sat on the ground with a depressed look, spraying primary hemostatic medicine, and then glared at the platypus who were smiling around him in anger. These platypus had a very high IQ and watched Haoren fall down happily.

"The time is too short, and you must consume all the sword energy values ​​to convert 20 ignition sword energy, and the conversion rate is also very low. You must always pay attention to the consumption of sword energy during the battle, otherwise you will not be killed by the enemy, but you will fall from the sky and die. This way of death is too embarrassing."

Haoren began to analyze it carefully. In fact, although this Fire God Wing looks very gorgeous, it has more defects. At least with Haoren's current sword energy value, the Fire God Wing can only be used as a scary skill in an emergency.

But even so, as a skill that can fly, the Wings of the Vulcan is definitely a magical skill. In this period, besides him, which profession can master the skills of flying?

"It's all very handsome when you think about it. The skills that LV1's Fire Heart has learned are so powerful. I'm really looking forward to the skills that will be followed."

Haoren looked at the platypus around him again. Through the records on the murals, he learned that these were the descendants of the platypus raised by the destroyed civilized tribe. They have always lived in dark caves, feeding on magma, and guardians of generations, the last legacy left by their former masters, the Heart of Fire.

"Zixia Mountain is probably the volcano that finally destroys the human race. It is full of flame energy gathered here, so it is the mutated creature like Fire Ant King."
Chapter completed!