After Han Feng tried several more times to no avail, he had no choice but to put the communication jade plate into the storage ring.

He looked at the wooden wall around him with a little anxiety, walked to the wooden wall on the left, reached out, tried to make contact, but when he approached a wooden bar, he was stopped by an inexplicable force, no matter how hard he tried, it was useless.

Han Feng was unwilling to give up, clenched his fists on the ground, and blasted out with a punch, another domineering fist, and the fierce fist force slammed into the wooden wall like a volcanic eruption, banging and rumbling.

The blue light flashed on the wooden wall, and the invisible power became blazing, blocking the impact of the long fist force one by one, crackling and crackling.

"Buzz ......"

Suddenly, a strong surge came, pushing Han Feng's body violently, retreating repeatedly, and retreating dozens of zhang before stopping, but the qi and blood in his body were surging, and the buzzing continued.

Han Feng stared at this wooden wall in disbelief, feeling afraid for a while, and didn't dare to attack indiscriminately.

He concentrated on breathing for a while, slowly calming down the surging blood and qi in his body, and he didn't know what to do for a while.

He looked down and found that the ground was also paved with cyan wooden strips, dense, and there were no gaps at all, and it looked like a large cyan floor.

It's just that the wooden strips on the floor don't emit cyan light, and they don't have that mysterious power.

Han Feng was slightly happy on his face, and without saying a word, his fist was a deceptive punch hitting the floor.

There was a muffled bang, and the floor was unscathed, and there was not a trace to be seen.

Han Feng punched down one punch after another, thumping, stunned that there was not the slightest scar on its surface, obviously this dense wooden board was indestructible.

"What the hell!" Han Feng muttered, there was no way to take this place now, but to wait and see.

He sighed and sat down cross-legged.

Han Feng breathed silently for a while, and after his physical strength was fully recovered, he naturally would not give up and continue to think about how to break the situation.

He unleashed his soul power and carefully observed the layout of this secret room, although he swept it at a glance, it was clear at a glance, but under careful inspection, there were completely different things.

Han Feng gradually discovered that the unique aura emitted by those wooden bars turned out to be extremely small runes, permeating the entire secret room, forming a network of runes, covering the heavens and the earth, not only isolating the infiltration of the aura of heaven and earth, but also making it impossible for his mana to spread out, like a forbidden magic array, all mana could not be used!

Han Feng's eyes flickered, and he ran the Heavenly Secret in his body, trying to forcibly break this prohibition, but he didn't succeed, but instead made his forehead sweat, his body was like a knife, and he was in severe pain.

He had to use the Alchemy Vajra Technique to relieve the pain, but he didn't stop, continued to grit his teeth and persist, comprehending the mystery with his heart, trying to break the seal.

However, he spent half an hour, and there was no effect, the Heavenly Dao Golden Pill in the dantian seemed to be sealed by paste, and it was extremely difficult to rotate, and any trace of mana burst out would consume his great strength, and once those mana were out of the body, they were swallowed by some special energy in the secret room, and there was nothing left.

"What the hell is going on?" Han Feng was puzzled, his brows furrowed, and he thought hard.

After another stick of incense, he was sweating profusely, his face turned pale, and he no longer had the strength to compete with the secret array in the secret room, so he had to give up for the time being.

He gasped for breath, injected his soul power into the storage ring, took out a small bottle of elixir, opened the lid, approached his mouth, and threw his head up to swallow several pills in one gulp.

The elixir melted in his mouth, turning into bursts of warm current and merging into his body, making him feel comfortable and the pain in his body suddenly subsided.

It took half an hour for Han Feng to fully recover, he breathed a sigh of relief, slowly stood up, walked to the wooden wall on the left to observe, and understood its mystery up close.

His eyebrows glowed, and he once again released an incomparably powerful soul power, stirring the aura emitted by the cyan wooden bar, whirring loudly, shaking the entire secret room.

Han Feng watched attentively and observed carefully, but he felt a wave of obstacles, sometimes frowning, sometimes stomping, sometimes showing a smiling face, sometimes full of sadness.

He felt uncomfortable for a while, and he was still unable to penetrate this secret array!

It's so hard!

This kind of formation is invisible, there is no fixed form, and even the runes are not finalized, and they are unpredictable, and there is no way to start.

Han Feng thought hard, pondered repeatedly, and deduced carefully, but he couldn't see through the rules.

He didn't give up, he gritted his teeth and persevered, and he persevered for three days, but he still didn't succeed, and even his eyes were red, and he didn't close his eyes once.

His soul power was also consumed very quickly, and there was only about a quarter left at the moment, so he didn't dare to continue, so he had to pause, close his eyes, and silently recover his soul power.

He was secretly anxious, during this period, he did not communicate with the remnant talisman, but the remnant talisman did not move at all, it seemed that it was asleep again, perhaps absorbing the energy before digesting it.

Isolated from the outside world and lacking in aura, Han Feng repeatedly ran the Ploughing Soul Technique, but he couldn't get energy from the outside.

He thought about it carefully, and finally had an idea, came up with a way, and after repeated attempts, he was finally able to rely on the residual energy in his body to restore his soul power, and it took him another three days to restore all the soul power crystals in the soul sea.

The strange thing is that although his soul power is transformed by absorbing his own energy, and it takes a long time, each crystal of soul power is extremely full, crystal clear, shining, and colorful.

Han Feng was amazed, and studied it silently for a while, but he didn't fully understand it, but he just knew that in this mode, the soul power generation would be more refined, and it would almost be able to multiply the effect with one as two.

Han Feng was overjoyed, he didn't expect to make a mistake, but instead let himself be a blessing in disguise, using this method, it must not take long to break through to the middle stage of crystallization.

He can't break through the ban here now, so he simply began to improve his cultivation, anyway, now his body refining realm and soul cultivation realm have reached the initial peak, only by breaking through that bottleneck, he can successfully enhance his strength, maybe he will have the opportunity to explore this secret array and get out of this secret room.

Han Feng didn't make a rash move, but first made a detailed plan in his mind, he decided to break through the realm of refining the body first, after all, he had absorbed a large amount of dragon breath crystals at the entrance of the pool cave before, and a lot of energy was still hidden everywhere in his body, even if it was consumed for a few rounds, there were still a lot of them, and they did not disappear completely.

He silently studied the third volume of the Alchemy Vajra Recipe again, and only after he knew it in his heart did he begin to break through the middle stage of the Alchemy Vajra Formula.

Of course, he will not simply break through, but with the help of the special prohibition here, he will put pressure on his body and increase the success rate of the breakthrough.