The reason is very simple, since entering here, all the communication tokens have become invalid, and even the heart stone given to him by Lin Xiaoyue has no reaction, so he is naturally isolated.

It's right to think about it, what kind of place is this, it can be said to be the core place of the entire trial secret realm, even the powerful cultivators of the Feather Immortal Sect don't dare to break in, and they can naturally block the transmission of all information.

Take things as they come!

Han Feng's mentality is adjusted very well, he can practice the Fa at this moment, and he has a sufficient supply of resources, so why not do it.

Moreover, he can also take this opportunity to escape, lest he go out as scheduled and be targeted by the ancestors of some children of the family, killing two birds with one stone, there is nothing better than this.

Of course, the premise is that his strength can really improve and finally leave here, otherwise he will really be trapped here for a long time, then he can't stand it.

Han Feng completely calmed down at this moment, and seriously reviewed the inventory, looking for the mistakes in it, in order to solve the problem before refining again.

Only in this way can he spend less on the Nine Grades of Medicine.

That big medicine is really the existence of one less plant, even if there is a medicine garden outside, he doesn't dare to waste it like this, who knows how many pills are needed to cultivate the third volume of the Spirit Alchemy Vajra Technique.

Before I knew it, more than half a month had passed.

Through various thoughts, Han Feng thought about solving the problems left over in the process of refining the Nine Rank Pill, and finally had a lot of answers, and he felt that he could try again.

He held the magic trick in his hand, opened the furnace again, and started refining the Nine Pins Pill.

This time, he added a few more eight-rank spiritual materials, all of which were existences that could enhance firepower, because after his repeated analysis and demonstration, the lotus form of the medicinal liquid of the nine-rank pill was maintained for too short a time, mainly due to the lack of firepower.

And the power of the three-color fire is just like that, and it can't be improved anymore, so he can only use the inner power of the spiritual material.

Han Feng's technique was skillful, and with a slight turn, he adjusted the three-color fire to the best state, and the energy of the various colors of flame was moderate, and he quickly calcined the various spiritual materials put into the Dan furnace into liquid.

Han Feng's eyebrows shone brightly, and the rolling soul power gushed out, attaching to those spiritual materials, stirring the medicinal liquid like a big spoon, allowing them to fully fuse, heat evenly, and quickly separate those impurities, wisps of green smoke rose in a curling stream, and they didn't know where to go.

After a short time, all the impurities in the liquid medicine are removed, emitting a burning light, colorful, fragrant, and intoxicating.

Han Feng's face became more cautious, and he carefully manipulated the change shape of the liquid medicine in the Dan furnace, gradually condensing into the shape of a lotus flower, and began to spin drippingly, absorbing the three-color firepower.

Sure enough, this time the lotus form lasted longer than the last time, and when its color gradually darkened, Han Feng began to change his technique, controlling this lotus flower to shrink inward, as if it was about to give birth to fruit.

At this moment, a crack appeared with the sound of the lotus flower of the medicinal liquid, and it immediately expanded rapidly, which caught Han Feng off guard, and collapsed in an instant, without even giving him a chance to save him.

Han Feng was a little dumbfounded, watching as the puddle of liquid disappeared into the flames in an instant, and the smoke rose and turned into nothing.

He removed the spell and let the three-colored fire return to the ground, closing the lid and he fell into deep thought.

"Could it be that I added too many spiritual materials to enhance firepower, so that the lotus flower couldn't balance when it contracted, and thus cracked?" Han Feng reviewed for a long time, and finally came to such a conclusion, he muttered secretly in his heart, obviously a little uncertain.

It's really impossible to be sure, this amount is difficult to grasp, and only through continuous experimentation can it be possible to find the best match, which is a bit of a luck component.

However, in the line of alchemy, the existence of luck has always not been ruled out, two alchemists of the same level, manipulating the same spiritual materials, refining the same elixir, sometimes there will be a situation where one person can succeed and the other person fails. This phenomenon is not uncommon, after all, after the combination of various spiritual materials, there are too many changes, and if you make a slight difference, you will lose all the games.

When Han Feng thought about it like this, he felt a little better in his heart.

He calmed down, pondered carefully for several days, carefully analyzed, removed one of the spiritual materials that enhanced firepower, and readjusted the Dan Fang.

In fact, any Dan Fang given to an alchemy master will slightly adjust the Dan Fang and add or subtract some spiritual materials according to the actual alchemy conditions.

Of course, the main configuration method will not change, otherwise it will be a new Danfang.

Before he knew it, Han Feng had already become an alchemy master who had entered the hall, which he didn't realize himself.

At this moment, he was still immersed in how to refine this Nine Rank Pill Muyang Pill, where did he have time to pay attention to these trivial matters.

As the name suggests, Muyang Dan must be a fierce thing, which can greatly enhance the vitality of the monk.

In this Fu Dan Lotus Method, it is the highest grade pill, and there is no record of the pill above the tenth grade, and somehow, perhaps because he feels that Han Feng has not been qualified to contact a higher grade pill before he successfully refines the nine-grade pill.

Han Feng opened the furnace again, took out a large number of various spiritual materials, flowers and trees, everything, overwhelmed, under the traction of his magic trick, all the spiritual materials entered the Dan furnace in an orderly manner, let the three-color fire burn and roast, and after a while, all of them turned into fluids, up and down, green smoke curling, removing impurities, and purifying medicinal power.

The previous section was unusually smooth, smooth sailing, and soon went to the stage of condensing the lotus form.

Han Feng grasped the magic trick in his hand, and controlled the glittering medicinal liquid to slowly arch up, gradually changing into an incomparably delicate lotus flower shape, exuding a pungent fragrance that was refreshing.

He remained motionless with both hands, maintaining this form, allowing the lotus flower-shaped liquid to absorb the energy of the three-color fire to its fullest, but unfortunately, after only three breaths, the lotus flower wilted on its own, collapsed, and turned into a pool of blackened liquid again, and in the blink of an eye, it turned into a puff of smoke and disappeared without a trace.

Han Feng's face was gloomy, as soon as he saw this state, he knew that he had misjudged the direction, not more spiritual materials to enhance firepower, but less.

He decided to adjust back to the previous plan, and on top of this, he had no other better way, but to be a dead horse as a live horse doctor.

However, when he tried for the fourth time, the lotus form formed by the potion liquid collapsed again, and even disintegrated faster than the previous three times.

He was a little puzzled, and he couldn't figure it out, could it be that the formula for the second time was the best? It's just that something went wrong in other aspects, not that the spirit material that enhanced the firepower was defective.