Start: Summon a Daji

"Next is the second level, listen up! There are pheasant rabbits in the same cage today, with 35 heads on the top and 94 feet on the bottom. Ask the pheasant rabbits how they are." The old fairy Nanhua spoke again.

"Isn't this the classic problem of chickens and rabbits in the same cage?" Qin Feng tried his best to recall it. It seems that this problem hadn't appeared in the Three Kingdoms period. No wonder it was used by the old fairy Nanhua to test himself.

The old fairy Nanhua reminded: "You only have one chance to answer. If you answer wrong, you will have no chance to enter Penglai Xiandao again in this lifetime."

"Twelve pheasant rabbits and 23 chickens!"

Three seconds!Qin Feng answered this question in just three seconds.

"How is it possible?!" The old fairy Nanhua was shocked. He had studied for a thousand years before he could figure out the mystery, but Qin Feng solved it in three seconds.

Qin Feng chuckled, isn't this the simplest quadratic equation in junior high school!

Suppose the number of rabbits is X and the number of chickens is Y

那么:XY35那么4X2Y94 这个算方程解出后得:兔子有12只，鸡有23只。

Of course, you can also use the hypothetical method, assuming that they are all chickens, then according to the total number of chickens and rabbits, you can calculate how many legs there are under the assumption, compare the number of legs obtained in this way with the number of legs given in the question, and see How much is the difference? For every 2 feet difference, there is 1 rabbit. Divide the difference by 2 to calculate how many rabbits there are.

At this moment, Qin Feng just wanted to pretend to say, it's not that I'm too strong, I'm just standing on the shoulders of giants!

"Come again! Today there are pheasant rabbits in the same cage, with 56 heads on top and [-] feet on the bottom. Ask the pheasant rabbits how they are." The old fairy Nanhua was not reconciled, so he asked a question again.

"Nine rabbits, ten chickens!" Qin Feng answered this question again very quickly.

The old fairy Nanhua had to be convinced, and said with emotion: "As expected of a person who dared to break through the barrier, you have passed this barrier!" After the voice fell, a book with the cover of Taiping Qingling Dao fell from the sky.

Qin Feng picked up the book and took a look. There were many alchemy recipes recorded on it, and it seemed that this Taiping Qingling Dao was just a phased reward. This time it really made a lot of money!

The old fairy Nanhua said slowly: "For this level, you need to refine all the elixirs above in one day, and the required materials are everywhere on Penglai Xiandao.

The alchemy furnace is in the hut one mile ahead. "

"One day?" Qin Feng flipped through the book quickly, and found that there were 36 kinds of pill recipes recorded on it!

"That's right, one day, start counting from now!" The old fairy Nanhua fell silent after finishing speaking.

As soon as Qin Feng gritted his teeth, he took one day at a time. He had even refined the elixir, so he was afraid of these elixir?

Afterwards, he began to pick wildly, and picked many, many copies of all the medicinal materials that could be seen on the island.

The ones that grow on the surface are alright. Many medicinal materials are deep in the soil and must be dug out, which is extremely time-consuming.

It took a full two hours just to pick the medicinal materials.

Then Qin Feng began to classify the alchemy formulas into different categories, because many alchemy formulas are unique, and according to records, some can only be successfully refined at night, and some can only be refined during the day when the sun is shining.

It's broad daylight now, so it's natural to refine the daytime elixir first.

"Nursing Qi Pill: Three drops of dragon blood tree sap, five cents of thousand-year-old ginseng, one piece of earth dragon fruit..." Qin Feng went through the pill recipes in his mind, and threw the ingredients into the furnace in order.

Not long after, bursts of medicinal fragrance came from the furnace.

After a while, Dancheng!

"It's done?!" Qin Feng was very encouraged when he saw the few qi-nourishing pills that had been successfully refined. This is undoubtedly a good sign!

From this point of view, it is not difficult to refine 36 kinds of elixirs in one day.

But soon Qin Feng found out that he was wrong, and many subsequent refinements failed. As time passed bit by bit, Qin Feng became more and more anxious, and the more anxious he was, the more likely he was to make mistakes.

Qin Feng took a deep breath, and swallowed an ethereal pill that he had refined by himself. Suddenly, his heart was very peaceful, and he eliminated all distracting thoughts.

Immediately afterwards, he continued to refine alchemy in an orderly manner. After he calmed down, the success rate of alchemy increased a lot.

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Five kinds.

Seventeen kinds.

29 kinds.

Qin Feng was completely immersed in the matter of alchemy, he forgot the time, the old fairy of Nanhua, and the dangerous dungeon mission, and devoted himself to it.

Of the five pills in No.30, only the last one is left, which requires the most materials and has the most cumbersome refining process.

This baby-care pill is not a health product for babies. What this baby-care pill raises is not a baby, but a monk's Nascent Soul!

That's right!This kind of elixir can greatly improve the cultivation progress of the Nascent Soul Stage, taking one pill can save a lot of practice effort, and there are more than [-] kinds of materials used to refine this elixir!

Qin Feng glanced at the sky, the dark sky was already showing signs of turning white, and the time left for him would definitely not exceed two hours.

"here we go!"

After Qin Feng took a deep breath, he took another ethereal pill to adjust his mood to the best.

Afterwards, he began to methodically follow the ancient prescription, throwing down a sufficient amount of medicinal materials.

Before I knew it, half an hour passed.

Qin Feng peeked into the cauldron in a nervous mood. There were five elixirs lying quietly in the cauldron, which showed that it was gloomy, and the smell of the medicine was also very disordered.

Qin Feng's heart was half cold, but he still took a pill and put it in his mouth to taste it.

After a while, he spit out the chewed elixir. This batch of Yuying Pills obviously failed!

"What went wrong?" Qin Feng recalled his own steps, the steps and weight should be correct.

After recovering, Qin Feng started alchemy for the second time.

This time alchemy is more cautious than the first time, so the speed is also slower, just to avoid the slightest mistake.

More than half an hour passed, and bursts of medicinal fragrance came from the furnace.

Qin Feng probed again, but the result was exactly the same as the first furnace, and failed again!

"Where did it go wrong?" Qin Feng couldn't figure it out. Suddenly, he thought of a possibility!

Is the Yuying pill the same as the elixir, there is a certain chance of success, even if there is no mistake in the middle, it depends on luck to practice this kind of elixir.

"It's a trick!" Qin Feng wanted to scold his mother angrily. There was not much time, but this kind of elixir that can only be made by luck appeared.

God knows how many times it will take. If you are not possessed by a chieftain, it is possible to practice ten times in a row without success.

But the time given by the old fairy Nanhua is only one day, and the remaining time is even slightly insufficient for him to refine it again.

"Fight! Success or failure depends on one move!" Qin Feng gritted his teeth and started the third attempt again.

Due to time constraints, the speed of alchemy this time is very fast, but it may be easy to make mistakes, but Qin Feng doesn't care anymore, if it is not faster, there will be no time.

Unknowingly, a faint medicinal fragrance wafted from the furnace, and then it became stronger and stronger.

"Five...four..." Nanhua Old Immortal's countdown sounded, further oppressing Qin Feng's nerves.

Just when Nanhua Old Immortal counted down to one, Qin Feng tapped the pill furnace, and five crystal clear and steaming Yuanying pills floated out of the furnace.

Become!

Qin Feng breathed a sigh of relief, and sat down on the ground. This day and night of alchemy was really exhausting, it was a double test of body and spirit.

"That's right! There are quite a few of the 36 kinds of elixirs. You have successfully passed the level!" After the old fairy Nanhua finished speaking, one or two of each of the 36 kinds of elixirs placed on the ground flew up by themselves, and there were nearly a hundred of them. Elixir!

Nearly a hundred pills hovered in the air, shrouded in a glow, gradually these hundreds of pills were all swallowed by the glow.

Qin Feng looked puzzled at the glow in the sky, the dazzling glow gradually restrained, revealing the things in it.

Two elixirs with a color comparable to white marble stayed quietly in the air. This elixir gathered dozens of 36 kinds of elixirs before. What kind of effect should it be?

"These two heaven-defying pills are your reward for successfully breaking through the barrier." After the old fairy Nanhua said, the pill flew towards Qin Feng. Qin Feng stretched out his hand to hold it, and felt a little cold for a moment.

Anti-Tian Pill Epic Level: Take this pill orally one hour after death, you can bring the dead back to life, and the soul will never die.

After Qin Feng saw the grade of Nitian Pill and the introduction of its efficacy through the system, he was really surprised!

You must know that the elixir is only at the SSS level, but this heaven-defying pill has reached a higher epic level among the elixirs!

Its medicinal effect is worthy of the name against the sky!

The legend is indeed true, and there are miraculous effects of the living dead and white bones in Taiping Qingling Dao, but the conditions are too harsh!

These 36 kinds of elixirs must be refined first, and then the 36 kinds of elixirs must be fused as materials by using supernatural powers, in order to be able to refine those two elixirs.

No wonder, the grade of Nitian Pill is one grade higher than that of the Elixir of Elixir!

The medicine of elixir only guarantees that people will not age, and it does not include accidents, but how can life not encounter accidents, if accidents happen, this heaven-defying pill of resurrection can save lives!

"This Heaven-Defying Pill is extremely precious..." Nanhua Laoxian introduced the efficacy of the medicine, which was exactly the same as the system's explanation.

Qin Feng carefully put away the two elixir, and bowed to the air: "Thank you, old fairy, for giving me the medicine!"

This trip to the dungeon was really rewarding. Not only did I master 36 kinds of pills, but I also got two pills that could save lives in the true sense.

In addition, when refining the Nitian Pill just now, only two-thirds of the materials were used, and one third was kept. This is also a huge gain.

I just like this kind of dungeon that doesn't need to be fought and killed, and can be cleared by outsmarting!

"For the sake of your respect for me, that's all, I'll give you the prescription of this heaven-defying pill as well." After the Huanan old fairy finished speaking, a vermilion talisman slowly floated down.

The characters on the talisman were like scriptures from the heavens, which I couldn't understand at all. As soon as Qin Feng caught it with his hands, the talisman turned into a stream of light and entered his body.

Immediately, there was an extra memory in my mind, which was the recipe for refining the Nitian Pill!

In addition, it also includes a low-level immortal cultivation method called Zhanxiashu. Its introduction should be the glow from the refining of Nitian Dan just now. This kind of glow can be understood as a strange " "Fire" is a brilliant alchemy technique in the world of cultivating immortals in ancient times.

It is also only through the technique of steaming clouds that one can refine the Nitian Pill, otherwise no matter how hard you try, you will not succeed.

"Thank you, old fairy!" Qin Feng knelt down on one knee this time, thanking him in a more respectful manner, thinking whether the old fairy should bestow some more treasures, otherwise he would be sorry for his sincerity.

The South China old fairy laughed and said, "You boy, don't be greedy."

Qin Feng couldn't help blushing, stood up and said: "Since the test is over, please let the old fairy pass me out of Penglai Island."

"It's over? Who told you it's over?"

"What?!" Qin Feng quickly checked the system and found that the progress of the Penglai Secret Realm has not yet ended!

-------------Chapter Dividing Line---------------

After the old fairy of South China finished speaking, Qin Feng was once again engulfed in clouds and mist, and came to an unfamiliar environment.