Heaven and earth aura flew from all directions, and Ao Ling Tian absorbed all these heaven and earth aura into his body.

The Dou Qi in the body was rapidly recovering, and it was strengthening, and after an hour or so, Ao Ling Tian's Dou Qi had reached the peak of the Nine Stars, and it was only one step away from the level of the Exterminator.

"The teacher said that if you are too anxious to improve your strength, your own strength will be limited. Ao Ling Tian felt that he was already a nine-star peak celestial, and he was also very happy in his heart, but he didn't take the Gathering Spirit Pill to try to help break through his own exterminator.

"My alchemy skills still need to be improved, while refining the elixir, I should cultivate the strength of the fighting qi!"

Ao Ling was too anxious to improve his strength at this time, so he immediately went to the dense woods before to find medicinal materials to cultivate his alchemy.

Time is like water flowing through your fingers, and three days have passed.

In a barren and ruined land, a man dressed in white sat on a broken rock, and dozens of meters away in front of him, a woman in a light blue shirt was sitting cross-legged on the ground.

These two people are none other than Shi Lanshi and Wan Ting, three days have passed, and the breath on Shi Lanshi's body has become thicker and more stable than before.

Wan Ting was about to break through the power of annihilation at this time, the aura on her body was condensing, becoming more and more powerful, and the aura of heaven and earth contained her entire person.

A moment later, Wan Ting slowly rose into the air, and the fighting energy in her body swam among the hundreds of bones in her limbs.

On the other hand, Ao Ling Tian was refining the elixir in the cave of the Cliff of the Dead, and he saw that his clothes had several holes that had been burned by the flames, and his cheeks were even more black and gray.

It seems that it is obviously a fried pill, he is now refining the pill with the fire of refining qi, in the past three days, Ao Lingtian has found dozens of medicinal materials, but he has used them to refine the pill.

"Bang!"

The alchemy furnace ding suddenly exploded with a bang, Ao Lingtian's entire face turned black, and he was also stunned when he looked at the alchemy furnace that had turned into ashes.

"Fried Dan again?Haven't I been able to master the four-pin pill yet?I've refined it five times, and I've fried the Dan five times, is this a joke?" Ao Lingtian suddenly vented at the Alchemy Furnace Ding.

"Damn, I don't believe it yet!"

"Bear!"

Ao Lingtian didn't admit defeat at all, and once again ignited the fire of qi refining, and there were many medicinal herbs around him.

Sichuan black horn, safflower leaves, withered grass yuan, Kun grass seeds, and water attribute magic cores, these medicinal materials are all medicinal materials for refining the four grades of pills, and they are also the pills that are difficult to refine among the four grades, called: Strange Pill.

Its effect can make some people born with strange meridians and muscles become normal people, just like some people's arms are born bent and cannot be straightened, and this strange pill can make these people become normal and can straighten their hands.

This Strange Pill is regarded as the top existing pill among the four pins of pills, and this pill is the elixir that many strange people dream of.

And the effect of the Strange Pill is not only to make some strange people return to normal, it also has the effect of enhancing the fighting spirit, and at the same time, it can also strengthen the meridians and bones.

Ao Lingtian is also crazy enough, his alchemy technique is obviously able to refine the three-rank pill for a short time, and now he is thinking about breaking through his ability to refine the four-grade pill.

Ao Lingtian was only eighteen years old at this time, his strength was already a nine-star peak celestial, and he was also a third-grade medicine refiner, if others knew that he had such ability and talent, those who had only been around the third grade for the rest of their lives would probably be so angry that they would vomit blood and die.

Although Ao Lingtian was only eighteen years old, his appearance had become like that of a twenty-year-old during this period of cultivation, giving people the feeling that he was not at all childish, only calm and unhurried.

"Bang!"

Another explosion sound came out from inside the alchemy furnace, and Ao Lingtian blew up the pill again, and when the pill was blown up, the entire cave shook slightly.

"No, I haven't been able to refine it yet, and my physical strength is almost exhausted. ”

Ao Lingtian lay directly on the ground, he was panting with rapid breathing.

"Huh?"

Suddenly, Ao Lingtian was lying on the ground and saw some tiny font carved into the stone wall above the cave.

"Blood Light Demon Pupil!"

His eyes suddenly changed to blood red, his eyesight increased several times, and the font engraved on the stone wall made him see it clearly.

"What is this? It feels kind of familiar. ”

Ao Lingtian saw that the font engraved on the stone wall was extremely mysterious, it was not the font he knew at all, but this font felt familiar to him.

Just staring at the mysterious font on the stone wall, after a moment, something came to mind, his eyebrows suddenly raised, with a look of surprise on his face, and said, "Is it a rune spell mark?"

After a while, Ao Lingtian used the yellow rune spell to seal it, and the phantom old man directly taught him all the abilities of his life, and there were more than a hundred rune spell printing recipes alone.

And he presented all the rune spell marks, one by one against the rune spell marks engraved on the stone wall.

"Sure enough, it's a rune spell mark!" Ao Lingtian saw that several of his runes were the same as the Xuanao font engraved on the stone wall, and he immediately guessed that the rune spell mark engraved on it was definitely a rune spell mark.

"What kind of rune is this?"

"Tear!"

Ao Lingtian couldn't understand the rune font on it when he looked at it, so he immediately tore off a piece of the clothes on his body, and then copied the rune font on the stone wall onto the cloth.

"Thirty-nine rune spell marks!"

After a while, Ao Lingtian copied the rune font on the stone wall exactly the same, looking at the rune font on the cloth, he counted it, there were thirty-nine in total, but he frowned, because he couldn't understand what kind of rune spell power this rune spell mark was.

"The teacher ordered me to come here before he died, is it because of this rune spell mark?" Ao Ling Tian suddenly felt that the Phantom Elder had something to do when he came to the Dead's Cliff before he died, not just to ask him to come here to cultivate.

Ao Lingtian thought that the Phantom Elder was so good to him, and his heart was also sour, but when he thought that his teacher was killed by the Eternal Corpse King, his eyes also became extremely sharp, and the murderous aura on his body also burst out amazingly.

"Teacher, I will definitely kill him with my own hands!" When Ao Ling Tian talked about the Eternal Corpse King, the image of him also appeared in his mind, and the five fingers on his hand suddenly clenched.

Thirty-nine rune spell seals were discovered, but he couldn't understand them now, so he immediately put them into the necklace ring around his neck.

Then he ran the Breath Technique, and his fighting spirit quickly recovered, and he immediately stood up again, his face becoming solemn and serious.

"Bear!"

The black Qi Refining Fire suddenly burned out in his hand, and before he knew it, the Qi Refining Fire of Ao Ling Tian was already much stronger than before, and the current Qi Refining Fire was probably already in the middle of the second or second level.