"My aura!" Dugu Yu screamed, frantically began to compress the aura, and the dantian continued to expand under his efforts, until he couldn't bear it anymore, and then chose to advance.

With a "pop", Dugu Yu successfully entered the fourth order of the Qi Refining Realm, the dantian expanded again, and then a chaotic aura flowed in, Dugu Yu did not dare to slack off, continued to compress the aura into the dantian, and then continued to expand the dantian.

After repeating this repeatedly, about a month passed, and Dugu Yu finally reached the ninth level of the Qi Refining Realm.

Hongmeng reappeared, "This level is different from the others, the ninth level of the Qi Refining Realm can expand the dantian again, reaching the legendary tenth level, so that it can be regarded as the real Great Perfection of the Qi Refining Realm, and it is also the foundation of why the ancient cultivators are so powerful." ”

It was also the first time that Dugu Yu had heard that there was actually a tenth level in the Qi Refining Realm, and this statement broke his original cognition at this time.

"Your "Sword Codex" should be incomplete, it seems to have only the main body, without the machine spirit, you must know that the tool spirit is a very important part, without it, everything in the "Sword Codex" can only be regarded as mediocre. Hongmeng's words were almost shocked, and Duguyu couldn't control his aura.

"You say that the Sword Book is incomplete? How is it possible, this is a classic book that our Dugu family has inherited for more than 100,000 years, and it even records the anti-heaven sword skills created by the geniuses of the Dugu family, how can it be incomplete!" Dugu Yu obviously didn't believe it, and Hongmeng couldn't persuade him, so he only said that if the instrument spirit was still there, it would definitely not even be recorded in the Ten Levels of Qi Refining Realm.

Dugu Yu stabilized his mind, abandoned distracting thoughts, and continued to suppress the dantian according to Hongmeng's method, until the dantian was full, and there was still no sign of breaking through the tenth layer.

Duguyu was about to give up, but Hongmeng suddenly said, "Run with all your strength and impact again." ”

Continuing to compress the aura, Duguyu felt that he might explode and die at any time, but thinking that Hongmeng would not lie to him, she should not be able to gain any benefits from her death.

So it continued to compress.

"Uhh

Dugu Yu's eyes were bloodshot, and blood vessels crawled all over his body like branches. At this time, his body was slightly swollen, and he was still constantly impacting the inner wall of the dantian, trying to expand it again.

"Boom!"

With a loud noise in his body, Duguyu, who was about to explode and die when he looked good, instantly felt a suction force coming from the dantian, and the aura was constantly inhaled by it.

"It's a success!" Duguyu said excitedly.

He looked inwardly at the dantian, and saw that the dantian at this time was more than ten times larger than the ninth weight, so the dantian was afraid that it would be able to maintain him for a long time.

"Well, the previous ten times the size is not bad. Hongmeng said without being salty.

"Isn't this just good?" Dugu Yu was obviously a little dissatisfied, now that he had broken through the tenth level of the Qi Refining Realm, and his dantian had expanded tenfold, but obviously Hongmeng still didn't seem to be satisfied.

"It's only ten times, you have to know that some people can expand their dantian to a hundred times the size of the maximum when they break through the tenth level of the Qi Refining Realm!" Hongmeng finished speaking, looking at Dugu Yu with a shocked face and smiling proudly.

"One, a hundred times! Is that still a human?" Dugu Yu smacked his lips and said in surprise.

"Of course, you must know that the limit of the human body is very large, and the tenth limit of the Qi Refining Realm is one hundred and eight times the size, but almost no one can reach it, but you have a chaotic aura, maybe you can try. After Hongmeng finished speaking, there was still a hint of expectation in his eyes.

"One hundred and eight times?" A trace of hesitation flashed in Dugu Yu's eyes, to be honest, he was expecting to be able to achieve it, but he didn't have much confidence in himself.

"Well, it doesn't matter if you can't reach it, after all, even in ancient times, there were people who could reach it, and there are only two I know. Hongmeng seemed to be comforting Duguyu.

"Two, which two? Are they still there now?" Dugu Yu was a little curious, after all, if someone else could reach him, he also wanted to give it a try.

"One is the original owner of the Harmony Space and the creator of the Harmony Space, and the other is his sworn enemy. After Hongmeng finished speaking, his mood was a little low.

"...... they," Duguyu asked tentatively.

"The old master is dead, killed by that guy and the disciples of the old master. After Hongmeng finished speaking, he stopped talking and disappeared.

Dugu Yu didn't dare to disturb too much, and silently operated the aura to fill the dantian.

After a while, Hongmeng's voice sounded again: "I have decided, I must let you reach the limit of the tenth level of qi refining, so that you can go further and be qualified to avenge the old master." After Hongmeng finished speaking, the entire Hongmeng space trembled, as if in response to her words.

Dugu Yu was a little stunned at this time, he didn't know what was going on before he already had an infinitely powerful enemy.

The sudden increase in aura directly interrupted his thinking, and Dugu Yu had to continue to compress his aura.

In a blink of an eye, more than ten days have passed, and Duguyu's dantian has expanded to a hundred times, but at this time, the supply of true qi is somewhat insufficient, and under the coercion of Hongmeng, Duguyu had to obediently hand over the nine thousand spirit stones in his private collection, watching it turn into powder in an instant, Duguyu's heart was dripping blood.

"I'm a poor bastard again, there are no spirit stones, how can I live in this mining area without spiritual energy!" Dugu Yu thought silently with a sad face.

"Don't be distracted, continue to expand the dantian. Hongmeng's voice came into his ears, making his body agitated, and he hurriedly concentrated on continuing to cultivate.

One hour, two hours.

Duguyu's body continued to tremble, and the swing amplitude became larger and larger. At this time, he had already expanded his dantian to one hundred and seven times, and he was only one time short of reaching the tenfold perfection of the Qi Refining Realm.

"Expand me!" Duguyu shouted, as if he was refueling himself.

"Boom!"

With a loud bang, Dugu Yu instantly broke through to the limit, and the aura in the dantian was constantly filled.

"Hmm, it doesn't seem to have reached my limit yet!" Dugu Yu felt as if he could continue to expand the dantian, so he once again absorbed the aura in the Hongmeng space and continued to impact the inner wall of the dantian.

"Are you crazy? Stop, you have reached the tenfold limit of qi refining, if you come nonsense, you will explode and die!" Hongmeng shouted anxiously at this time, finally met a good new master, and promised to avenge the old master, she didn't want to lose this precious opportunity.

"I don't think I have reached the limit yet, didn't you say it, the person who killed your old master is also the tenfold limit of the Qi Refining Realm, if I am like him, I am afraid that I will not be his opponent in this life, so if I want to make myself stronger than him, I must have a more solid foundation than him, so that I can have a chance to defeat him, right?" Dugu Yu grinned, and at this time his gums were already cracking due to excessive force.

"You still have a lot of opportunities, you still have time, you can take your time little by little!" Hongmeng was really a little anxious, she had never heard of someone who could break the limit of the body.

"I'm a sword cultivator who stands up to the sky, how can I be willing to be the queen of people!" Dugu Yu bared his teeth, and the sky-rushing sword intent instantly exploded, directly raising from the first order to the second order sword intent.

After that, the sword intent disappeared in an instant, appearing in the dantian, and together with Duguyu's aura, it continued to bombard the inner wall of the dantian.

"Boom!"

"Poof!"

"Come again!"

"Boom!"

"Poof!"

Every time he bombarded, Dugu Yu spat out a mouthful of blood, and at this time his front was already soaked with blood, but his eyes still revealed a madness.

"Ahh

Dugu Yu tried his best, and the sword intent and true qi slammed heavily on the inner wall of the dantian.

"Click"

With a soft sound, the dantian expanded again, breaking through the limit of the body, reaching one hundred and nine times.

Dugu Yu once again ran with all his strength and continued to bombard towards the inner wall of the dantian.

"Dugu Yu, what are you going to do!" Hongmeng has never seen such a lifeless person, and at the same time, he is blaming himself for revealing the old master's affairs to him too early, if there is no pressure, maybe he will not be able to reach the tenfold limit of the Qi Refining Realm, but he can also be a heroic man quietly, and now all this has changed. Looking at Duguyu in such a tragic situation, her tears kept flowing from the corners of her eyes.

"Open!"

Dugu Yu bombarded the inner wall of the dantian again, and his body had already produced some cracks under the shock.

"Open again!"

The cracks on his body expanded again, and Dugu Yu seemed to be completely unconcerned, still bombarding the inner wall of the dantian.

"Ahh

Dugu Yu looked up to the sky and roared, and his sword intent advanced again.

"Open!"

"Click"

With Sancheng's Xiaocheng sword intent, Dugu Yu once again expanded the inner wall of the dantian to one hundred and ten times.

"Oh, ahhhh

At this time, Dugu Yu seemed to be a bloody man, and the crack in his chest could even see his heartbeat, but he didn't care at all and still smiled.

Hongmeng also burst into tears, although Duguyu's injury looked serious, but as long as the dantian was not broken and the person was not dead, it could be completely recovered.

"Fool, why are you working so hard, do you know that if your dantian is shattered, you will be blown to pieces by a massive amount of true qi in an instant!" Although Hongmeng was complaining on his lips, he was constantly manipulating the chaotic aura in his hands to heal Duguyu's injuries.

Dugu Yu is a day, and he has too many things to be familiar with. The added power, the expanded dantian, and the sword intent to break through.

If you can't fully grasp these things, then when you face the enemy, you will not be the enemy's talisman, but your own.

Duguyu was healing and familiarizing himself. There was not much left of the original hemostatic pills, but now they have all been taken by him and healed.

"This power is really powerful, and now even if you don't use the Ground Split, you can easily defeat Old Demon Qiu. Dugu Yu silently felt the power in his body and muttered to himself.

"Of course, you were just an ordinary second-order kid in the Qi Refining Realm that day, and the tenfold Qi Refining Realm will improve your physique once, and breaking through to the tenfold limit will greatly improve your physique again, and you are two more than the limit, so it stands to reason that you should be stronger. Hongmeng sat on Duguyu's shoulder, shook his feet, and said lightly.

"yes, stronger. Dugu Yu looked into the distance, now that his injuries have healed, three months have passed since the academy ranking battle, and today is the time for each peak and hall to select disciples, and I don't know what happened to everyone.