That night, after Yu Yilie returned to the City Lord's Mansion, he asked his uncle for a secret room and began to practice in retreat.

In the previous battles, the true qi in his body was exhausted several times, but it was precisely this tempering that made the true qi in his body much purer than before.

There are a total of eighteen layers of the Red Flame Exercises, and every three layers are divided into a small realm, and the highest can be cultivated to the late innate stage, at this time he has already cultivated to the twelfth layer, and he is only one step away from breaking through the thirteenth layer and reaching the middle innate stage.

In the secret room, Yu Yilie sat cross-legged on the stone bed, running the Red Flame Technique in the direction of five hearts to the sky, raising his state to the peak, and then preparing to break through the thirteenth layer in one go.

After all, he was able to kill Di Yang, luck was one thing, but it was also because his martial arts cultivation had reached the early stage of innateness, otherwise he would have been destroyed by a sword long ago.

From the previous battle between these two guys, he vaguely understood that the martial artist was not weaker than the immortal cultivator, but there was a slight difference in means.

One is good at long-range attack, the other is good at close combat, and the strength is comparable, and the immortal cultivator will be vulnerable to the close range of the martial artist, and if the martial artist can't find the opportunity to melee combat, he will soon die.

Although he has already stepped into the immortal path with half a foot, the road ahead is vast, if he does not have enough strength, he is afraid that it will be difficult to survive in a world where there are many immortal cultivators.

It was because he made up his mind to practice martial arts and immortal dao together to make up for the shortcomings of only one of them.

Although this will be relatively slow, but be careful to make the Ten Thousand Year Ship, while still in the world, he must seize the time to improve himself.

Soon, Yu Yilie adjusted his state to the best, and without hesitation, he began to run the thirteenth-layer exercise route, urging the true qi to begin to break through the bottleneck.

"Boom!"

Yu Yilie's spiritual sense clearly felt that his pale red true qi was as if it had turned into a red river, trying to open up a new river, constantly impacting the blocked veins.

Under the control of his spiritual sense, soon, the true qi was advancing little by little like a broken bamboo, until the tendons and veins were completely opened.

And at the moment when the tendons and veins were opened, Yu Yilie only felt that his true qi suddenly became active, and he couldn't stop pouring into the newly opened tendons.

In this way, he opened up the tendons one by one, and his spirit did not feel the slightest tiredness, but he felt handy when opening up the tendons.

I think it was because he had cultivated the quenching technique, not only did he strengthen his soul, but even the fire aura in his body could continuously replenish the true qi consumed when he opened up his tendons.

It seems that the Martial Dao and the Immortal Dao also have something in common, and not only did they not slow down the progress of cultivation, but they complemented each other and complemented each other.

I don't know how long it took, when he opened a vein again, the thirteenth layer of the Red Flame Gong's mental method was impressively integrated.

Moreover, in the true air circulation, a large circulation is formed, and then it returns to the dantian, expanding his dantian into a larger space little by little.

At this time, he obviously felt that the true qi in his body was several times stronger than before, if his dantian could only hold as much true qi as a small pond before, then now, his dantian could already hold as much true qi as a small lake.

And the opened veins are like streams, continuously injecting true qi into the lake during the operation, and growing the lake little by little.

At this time, he had already broken through the thirteenth layer of the Red Flame Gong and reached the middle stage of the innate stage, if the human madness was still there, I was afraid that he would also need to deal with it with all his might.

It's a pity that this guy has been accepted by the Shangzong Immortals, but he is afraid that he is also making rapid progress, but there is a faint sense of urgency in his heart.

Thinking of this, Yu Yilie couldn't help but open his mouth to spit out the fire jade, and his mind moved slightly to let the fire jade overflow with fire aura.

At the same time, his posture changed, his hands fell on his knees, and his fingers pinched into a strange gesture.

However, it was he who began to cultivate the first layer of the Quenching Technique, and at the same time, his mind gradually calmed down, and he tried his best to absorb the slightly turbulent and violent aura from the fire jade.

Soon, wisps of fire aura were sucked into the dantian by him, although there was no spiritual warmth in the spirit stone, but he had already adapted to it over the years.

Coupled with the gradual improvement of his martial arts cultivation, his physical body is far from being as weak as that of an immortal cultivator.

Although the aura in the fire jade is violent, it is faintly much purer than the fire aura in the spirit stone, but I don't know what kind of existence the little sun that forms a sea of fire in the fire jade.

I don't know how long it took, the red aura mass in Yu Yilie's dantian finally reached a certain critical point under a little growth, and under a bulge, it expanded a lot.

"The second level of qi cultivation has finally been reached!" Yu Yilie was overjoyed in his heart, but he didn't expect that under the infusion of aura in the form of fire jade cramming, he would enter another layer in just a few days.

At the same time, he found that the true qi in the dantian had been squeezed out a lot, as if there was a more advanced energy in the true qi lake, and the natural and low-level energies could not be fused together.

Thinking of this, he couldn't help but tremble in his heart, stopped cultivating, and slowly opened his eyes.

Although the amount of spiritual qi is not as huge as the amount of true qi now, it is because he can only cultivate to the second level of qi training, if he cultivates to the late stage of qi training, he must not burst his dantian?

"No, you have to ask that guy Di Yang, if something goes wrong, it will be worth the loss!" Yu Yilie thought cautiously.