Li Bin practiced and condensed until the underground spiritual energy was exhausted, and the pure yang true qi in his body rose from the eighth layer of the pure spiritual realm to the ninth layer.

Li Bin felt that his cultivation time this time was not much shorter than in the gourd-shaped cave, but the purity of pure yang true qi in his body had only increased from the eighth layer to the ninth layer, from this point of view, the level of true qi condensation and promotion was almost the same as that of martial arts cultivation, and it was often more difficult to improve when he was about to break through to the next level and realm.

However, this is not a problem for Li Bin, after ingesting the spiritual energy of a spirit stone resource in the depths of the passage, the temperature near the passage has gradually weakened, and it is not as hot as before.

Li Bin regained his spirits and continued to walk along the winding passage of the cave to search deeply.

In a new square cave, Li Bin was pleasantly surprised to find that this square cave the size of a basketball court was extremely hot, and five spiritual qi breaths appeared in turn from left to right in the cave. In other words, there are five spirit stone resources hidden deep in the underground of this cave! No wonder the temperature and heat in this cavern were much higher than most of the lava caverns.

Li Bin has also explored the lava cave almost completely, and this cave seems to be the end of the cave passage.

Li Bin suppressed the excitement and joy of finding the rich spiritual stone resources in his heart, collected his mind, found a flat place, sat down cross-legged, and began to practice exercises to condense and absorb the spiritual energy in the cave.

That is to say, the pure yin and pure yang true qi in Li Bin's body has been greatly strengthened and improved, which has further enhanced the strength of the protective body, and only then can he resist the blazing and extremely high temperature in the deepest cave of the lava cave.

Li Bin cultivated cross-legged, and time passed quickly.

When Li Bin practiced his exercises to condense the pure yang true qi in his body, all the spiritual qi scattered in the deep underground in the cave was collected and ingested into Li Bin's pure yang dantian qi sea. Then through the Qiankun One Qi Jue Gong method to all parts of the body, the cycle is repeated 9981 times. In the end, the pure yang true qi of high purity is condensed.

I don't know how many rounds of condensation cultivation I have completed, when Li Bin temporarily dispersed his power and breathed his breath. The long-lost voice of the system came from his ears: "Congratulations to the master, the purity of the pure yang true qi in your body has broken through to the first layer of the pure yuan realm!" ”

Li Bin couldn't help but ask in his heart: "What is the difference between the Pure Yuan Realm and the Pure Spirit Realm, and what is the difference and influence of the Pure Yuan Realm when cultivating?" ”

"When the purity of True Qi reaches the Pure Yuan Realm, it will step into a new cultivation realm. The universe of heaven and earth is filled with a huge amount of innate vitality energy that is invisible to the human eye and has a purity higher than the spiritual energy of the spirit stone, once the cultivator can cultivate the purity of the true qi in the body to the pure yuan realm, then he can use the innate vitality hidden between heaven and earth when cultivating in the future. ”

Li Bin was overjoyed after hearing this, and continued to ask: "After reaching the Pure Yuan Realm. Can aura resources still be used for cultivation to improve one's own cultivation? ”

"You can directly use the innate vitality energy that is much purer than the aura to cultivate, is it necessary to pay so much attention to the spirit stone aura, which is a slightly lower grade cultivation energy resource?" The prompts of the system made Li Bin awake and enlightened.

Li Bin continued to meditate cross-legged and continued to practice and condense. A scene that surprised Li Bin appeared, just during the first round of exercise condensation, Li Bin felt that the spiritual energy deep in the underground everywhere in the cave seemed to be violently pumped by a pump, and a large amount of spiritual energy resources poured into Li Bin's pure yang dantian qi sea.

In addition to ingesting more and faster underground aura, Li Bin also felt that the purity of the spiritual qi resources of the spirit stone was obviously different from the purity of the spiritual qi resources that converged into his pure yang dantian qi from all directions. The innate vitality that existed in the nearby space was just due to the narrow space in the cave stone room, and Li Bin had just stepped into the first layer of the Pure Yuan Realm, and his absorption capacity was not high. It can only ingest the extremely limited innate vitality that exists in the stone chamber, and this amount is very small.

Although the amount of innate vitality ingested by this force is not large. But the purity is much higher than the spiritual energy contained in the underground spirit stone in the cave room, and this innate vitality can directly merge with the pure yang true qi in Li Bin's body. Seamless integration. The pain of repeated condensation is eliminated, and the cultivation efficiency is greatly improved.

Of course. If you repeatedly condense the innate vitality energy ingested according to Li Bin's original Qiankun One Qi Recipe Technique, you can also strive for more refinement, and you can also improve the purity of true qi in your body again, but the improvement amplitude and room for improvement are much smaller.

Innate vitality is the purest energy in the earth, heaven and universe, and when each of us is born, we will bring a mouthful of innate vitality from the mother's womb, which is the original life source energy.

And now, relying on the unremitting cultivation of the day after tomorrow, Li Bin can finally condense the purity of the true qi in his body to a level with the purity of the innate vitality, and he can directly use the huge amount of innate vitality that is filled with the universe of heaven and earth to cultivate.

"Congratulations, master, your martial arts cultivation has broken through and advanced to the first level of the realm of refining the Void Combination Dao."

After Li Bin condensed and converted the ingested aura energy into a higher purity of innate vitality, the system's prompt sounded.

The spiritual energy of the spiritual stone in the entire cave has been ingested by Li Bin, and sure enough, it is just like what the Vermilion Bird Holy Beast said to Li Bin before: "The higher your cultivation, the more spiritual energy resources will be consumed when cultivating, Li Bin has absorbed all the spiritual energy required for the previous dozens of rounds of condensation in just one round, which means that Li Bin's current cultivation is no longer what it used to be."

After the spiritual energy in the cave was consumed, the blazing heat of the entire cave quickly dropped. It is no longer as hot as when Li Bin first came in, as if he was in the flames of a furnace.

The purpose of cultivation was achieved, and the spiritual energy of the spirit stones in the cave was almost consumed by himself, and Li Binzhi took a proud stride out of the cave from the same way.

Out of the lava cave, Li Bin retrieved his coat and corresponding objects, dressed neatly, and was about to perform the Spiral Nine Shadows Light Skill to leave the Flame Mountain Range, when he suddenly felt a whirlwind of the sky, his eyes were full of stars, and his stomach was "gurgling". An unprecedented feeling of hunger hit his heart, and Li Bin concentrated on cultivating in the lava cave, completely unaware of how much time had passed.

Once he finished his cultivation, his whole body relaxed, and he was more active, Li Bin, who had not eaten dripping water for seven days and seven nights, almost fainted due to dehydration, weakness, hunger, and fainting, if it weren't for the support of the abundant innate vitality in his body, Li Bin would have fainted in the lava cave.

However, although the innate vitality is pure, it can't be used as food, and it can't fill the stomach, Li Bin has only just stepped into the first layer of the realm of refining the Void and Combining Dao at this time, and it is still too early to use the innate vitality to cultivate and nourish the body's internal organs and completely solve the problem of his own energy circulation supply.

Li Bin meditated cross-legged on the spot, practiced exercises to absorb the innate vitality hidden in the surrounding space, and after a round of condensation, Li Bin felt that his hunger was reduced by three points, his body's weakness and prostration were also alleviated a little, and the strength of his limbs gradually recovered.

Li Bin was overjoyed and pondered: "It turns out that cultivating with innate vitality is far better than using spirit stone aura, and many physical problems that cannot be solved by aura can be properly solved by innate vitality." ”

After a round of condensation and ingestion cultivation, Li Bin had already taken in almost the innate vitality that could be used in the surrounding space, rested a little and waited for a while, and after the surrounding air energy flow was replenished, Li Bin continued to start ingesting and refining the innate vitality. (To be continued.) )