"It's actually you? A second-layer dragon with a miscellaneous spirit root actually killed Cheng Yi?" Cui Cheng's face was full of disbelief, but who was he? This was clearly the same breath, and he immediately understood that his younger brother couldn't kill people, and he was killed as a result.

......

In the cave, after Chen Nan was to be repaired and recovered, in order to ensure that he broke through the fourth layer of the dragon, he scattered two thousand spirit stones around and arranged a spirit gathering array, and the rich spiritual mist immediately surged, filling the entire cave.

"Damn, it's good to have spirit stones. Feeling that the aura was drilling into the pores without absorbing it, Chen Nan was extremely comfortable, and immediately sat down and began to try to break through.

Under the operation of the Yantian Holy Technique, the rich aura poured into the body with a whirlpool, integrated into the meridians, and was absorbed by the dantian into a liquid true element, and then guided out from the dantian to wash and wash his meridians, but his cultivation still did not mean to climb, but only made the Danhu Lake more condensed and surging, rolling like ocean waves.

Chen Nan immediately realized that the spirit stones might not be enough, and as his cultivation grew, the spirit stones he needed increased exponentially.

He didn't hesitate, and immediately threw out another three thousand spirit stones, at this time he couldn't help but thank Han Laowei, if it weren't for him, he wouldn't even have a chance to advance.

The aura around him became more and more intense, and as his breath frantically poured into his body, Danhu Lake was quickly filled and condensed.

Finally, when Danhu Lake was completely solidified and stabilized, and began to expand again, the liquid true yuan in the meridians flowed endlessly like a rolling river, and his cultivation began to climb steadily, from the late stage of the third layer of the dragon to the late stage of consummation, but that layer of promotion barriers was not sensed for a long time.

Chen Nan knew that the third layer of the dragon to the fourth layer of the dragon was a breakthrough in the dragon realm, so he was not in a hurry, and continued to absorb the aura, as the aura continued to pour into the body, the true yuan in his meridians became more and more violent, the meridians were wider, and they became more tenacious under the repeated washing of the true yuan.

Chen Nan was overjoyed, sensing that layer of barriers to be able to advance to the hope, otherwise even if the aura is rich, it is impossible to break through, it is not that there are many spirit stones, and you can be promoted if you are rich enough, which shows that your perception is still enough, and it also shows that the anti-heaven of the Yantian Holy Technique.

He immediately activated the True Yuan and began to bombard the barrier, but the barrier was like an insurmountable rock, and the spiritual power bombarded it, just like the waves on the shore hitting the reef, and the barrier did not move at all.

Chen Nan knew that he was still too anxious, so he didn't continue to attack, but began to accumulate strength, and when the true yuan in his body condensed to a certain extent, he once again launched an attack on that layer of estrangement.

"Boom!" Chen Nan's divine sense roared, under the impact of violent spiritual power, the barrier finally trembled, but it was only trembling, but it had no intention of opening, several impacts failed, Chen Nan immediately swallowed a special Biling Pill.

As soon as the elixir entered the body, it immediately turned into a bubbling spiritual liquid flowing through the limbs and hundreds of remains, with the blessing of the spiritual liquid, the breath in his body became more violent, and the true yuan in the meridians was like a tumbling river, the waves were rolling, and his meridians were torn with bursts of pain, but he did not dare to slack off at all, and endured the pain with this violent and surging spiritual power and rushed to that barrier.

"Boom!" The barrier was like a door, and it was finally blasted open a gap, but it didn't feel like it was being blasted open, and there was still no intention of opening it after repeated impacts, not only that, but as the power of the medicine weakened, the door was about to gradually close.

Chen Nan knew very well that once this door was closed, he would no longer be able to sense its existence, and this promotion would fail.

If it is an ordinary person, the promotion will undoubtedly fail, which is also the reason why many monks have been stuck in a realm for many years and cannot advance, the realm not only needs to understand, but also needs a strong aura, and the assistance of resources such as pills is even more essential, just like the old monster of Jindan in the sinkhole, stuck in the third layer of Jindan for hundreds of years can not break through, it is a lack of resources.

But Chen Nan is different, he is still an alchemist, the alchemist needs a monk with alchemy talent to feel it all his life, and then he can achieve the way of alchemy, and he is already a Dan master at a young age because of the anti-heaven of the Heavenly Sacred Formula, Bi Ling Dan is hard to find for ordinary monks, even if there is Bi Ling Grass, it cannot be refined into a Dan, but he has twelve.

Therefore, Chen Nan did not hesitate to swallow two special Biling pills at one time.

"Boom!" As soon as the pill entered the body, the true yuan in his body was even more violent and surging, making a loud roar, the huge waves in the Dan Lake were monstrous, and the true yuan was like a roaring river frantically washing his meridians everywhere, but there was nowhere to go, and he was guided by him to rush madly towards the barrier.

"Boom, boom!" Under the continuous impact, the barrier finally loosened again, gradually opened, Chen Nan slightly calmed down and adjusted the furious True Yuan, and rushed towards the barrier again with the rolling waves.

"Boom!" Chen Nan Zhihai roared, and the next moment he saw a new world, as if he had entered another world, his mind was bright, four dragon qi rose above his head, the heaven and earth vitality seemed to be drained, and the spiritual power within the surrounding twenty miles was swept away by the four dragon qi, forming a substantial whirlpool rushing to the cave mansion, and when the dragon qi was approaching, it turned into four dragon-shaped whirlpools, and the whale sucked into his body.

Fifty kilometers away, a fifth-level unicorn wolf discovered the crazy surging aura vortex here, and immediately climbed the mountain, and saw four dragon-shaped storms frantically plundering the surrounding aura, this terrifying absorption speed made some weak demon beasts scatter and flee, and thought that some powerful existence was cultivating.

Although the one-horned wolf was strong, it was also suppressed by this terrifying absorption speed, and it didn't dare to approach, quietly descended the mountain, hid in the cave and squinted.

Chen Nan knew that he had finally been promoted, the spiritual power in his body was still violent, he continued to run the exercises to do Zhou Tian operation, rushing forward in the newly opened meridians, his cultivation was still climbing, a few weeks later, his cultivation came to the early stage of the fourth layer of the dragon consummation, and once again touched the small barrier in the middle of the fourth layer, under the impact of the surging spiritual power, this layer of barrier was naturally rushed through, the true yuan in his body finally began to calm down, and the Danhu Lake, which had expanded again, shone with a faint golden light, sparkling, and began to calm down.

Chen Nan swallowed a solid Yuan Dan and began to stabilize his cultivation, waiting to be cultivated to stabilize in the middle of the fourth layer of the dragon, Chen Nan opened his eyes, more than 5,000 spirit stones were turned into flying ashes, the cave was as calm as ever, and the spiritual power had been consumed.

"Hehe, sure enough, the resources consumed are becoming more and more terrifying, five thousand spirit stones, three Biling pills allowed Lao Tzu to advance to the middle of the fourth layer, I'm afraid the next realm needs more spirit stones. Chen Nan shook his head helplessly.