Dongqi City, Shen Ji Danpu.

"You're going to sign up for Dongqimen's entry Danbi?hahaha-hahaha-Liang Feng, are you teasing us?" the alchemy disciples laughed, they had just had lunch and had some leisure time to sit down and rest.

Liang Feng looked serious and said, "I'm serious, why can't I sign up?" I now have Peiyuan Eight Rank Cultivation, and my age is more than ten years younger than forty years old, why can't I sign up?"

A disciple said: "Hey, hey, Senior Brother Liang, if you refine the Peiyuan Pill with 20 pills in one furnace, the Dan rate is only less than 70 percent, how can you dare to refine the 100 Dan in one furnace? The difficulty of the latter is several times higher than that of the former, and the results in the first half of previous years basically required a 70% Dan rate to enter the top 2,000. ”

Liang Feng nodded, he knew the rules of Dongqimen's entry pill: once every five years, divided into two games, the first half is the refining of a large furnace of high-grade Peiyuan Dan, the test is the basic skill of alchemy, ranked according to the Dan rate, the ranking in the top two thousand enters the second half, the second half of the refining elixir varieties are all confidential, you need to learn and refine, the test is the understanding of alchemy, and it is also ranked according to the number of elixirs refined, and the top four hundred can become Dongqimen disciples.

Another disciple said, "Even if a miracle occurs, you really have to refine seventy Peiyuan Pills in one furnace, but in the second half, how can you compare to those second generations of cultivators? They have been taught by a good master since they were children, and they have many resources to practice, so it is possible that they have just refined the kind of spirit pill that they have competed in." ”

Another disciple said: "Let's not talk about the competition in half a year, Senior Brother Liang, do you have an application fee of two thousand high-grade spirit stones?"

Liang Feng shook his head. Three years ago, he finally came to this Dongqi City, but found that he didn't have any skills to earn spirit stones in this city, and finally became the alchemy disciple of this Danpu - known as the alchemy disciple, but in fact, it was just Pei Yuan Dan, which consumed huge spiritual power and had very low alchemy requirements, similar to the assembly line workers in the previous life. In this way, in the first half of the year, he could only refine the medium-grade Pei Yuan Dan, and then because the medium-grade Pei Yuan Dan was well refined, he was promoted to the disciple of refining the high-grade Pei Yuan Dan.

One of the disciples laughed and said, "Then Senior Brother Liang, how many spirit stones do you have? If there is a difference of twenty or thirty pieces, it will be enough for our senior brothers to make it up." ”

Everyone laughed again and coaxed: "Senior Brother Liang took out the spirit stones and counted them. ”

Liang Feng's face was indifferent, he took out his skin bag and poured all the spirit stones on the table, counting them one by one - there were only twenty-seven high-grade spirit stones. He sighed in his heart, the monthly income of the alchemy workers is very low, and now there is only one high-grade spirit stone, although there is also some extra income in the past few years, but it is all spent on learning alchemy.

Seeing this, some of the disciples sighed, some screamed, some said that it was too far from two thousand, and some pretended that it was already a lot, and as long as they saved for another one hundred and twenty years, the registration fee would be enough.

Liang Feng donated a group and said with a smile: "I also ask all the senior brothers to help, one person will lend me ten spirit stones, and when the junior brother and I are admitted to Dongqi Gate, how about one hundred, oh no, two hundred spirit stones per person?"

"Can you be admitted to Dongqimen? hahaha--if you can be admitted to Dongqimen, everyone here must be able to advance to the Dao Entry Period and the Jindan Period, hahaha--gone, gone. As soon as everyone heard about borrowing the spirit stone, they walked more than halfway, leaving a few kind-hearted people and said: "Senior Brother Liang, if you do something else, we can still help with a few spirit stones, but you borrow the spirit stone to sign up......" They all shook their heads, and there was no one left.

Liang Feng smiled bitterly, and secretly said that he didn't expect to borrow the spirit stone from them. He stood up and prepared to go out, these alchemy disciples sometimes had to be buddies in the afternoon to sell elixirs at the front counter.

Before he took a step, the meridians at the Du Ren vein suddenly twitched and contracted, and then the meridians of the whole body twitched and contracted together, Liang Feng let out a painful cry, and his body instantly curled up into a ball and fell to the ground-

He involuntarily rolled and jumped on the ground, and his mouth made a rough sound of "hehe" - "Old man Cheng really didn't deceive people, the fish meat that quickly recovered his strength that day was really poisonous! Now the frequency of sudden convulsions and contractions of the meridians is getting higher and higher, it was only once a year, but now it is almost half a year, in a few years, will it be like this every day?" Although his body hurt uncontrollably, his soul seemed to float away from his body, and his thoughts were still clear.

When the disciples heard the sound, they turned back again, with different expressions on their faces, and there were many discussions, and two close and kind disciples carried Liang Feng back to his room and persuaded: "Senior Brother Liang, you still don't want to be admitted to the Dongqi Gate on a whimsical basis, if you have a spirit stone, it is better to buy a spirit pill to cure your illness." After a few words of persuasion, both of them went to do their work.

After tossing and turning in the room for nearly an hour, Liang Feng returned to normal. He took a leave of absence from the shopkeeper, turned a corner out of the store, and after walking some way, he turned into a shop that sold magic circles.

"Liang Daoyou, why do you have time to come to my shop today? The old man has been waiting for you for a long time, the old man has really made a lot of money by calculating the π value of the 'Circumcision Technique' you said last time, and the π value I calculated is about 3.14159, and now the circular veins in the circle are really much more accurate and smooth-hahaha, hahaha, I used a copy of "The Key Points of Alchemy in the Great Dan Furnace" to exchange it for the 'Circumference Technique' with you, and the old man has earned it!" said the shopkeeper Zhao of the circle shop.

Liang Feng said with a smile: "Is the 'circumference technique' to cut off the circle? The circle is a circle drawn on paper, how to cut it off? Is it erased?" He lowered his voice again and said: "The senior who I exchanged with you last time is here again, and he said that he has the 'spherical surface area calculation method' you want, but the price is relatively high......

"Oh, yes, yes, Liang Daoyou, you said that the 'Circumcision Technique' was given to you by a senior in the middle stage of the Dao. That senior really has a 'spherical surface area calculation method'? The price is negotiable! How can the old man verify that his calculation method is correct?" said the shopkeeper Zhao in a low voice.

Liang Feng said again: "He said that the 'Spherical Surface Area Calculation Method' cheats have their own calculation steps, and you will know that it is true at a glance!"

He knew why Shopkeeper Zhao was eager to know the 'Sphere Surface Area Calculation Method' - when the defensive circle was unfolded, it usually formed a hemispherical spiritual power cover, and if the sphere surface area could not be accurately calculated, the veins of the magic circle and the required spiritual power value could not be accurately made. Of course, there are other ways to estimate the surface area of the sphere, but when the error of the calculated value exceeds a certain level, the circle will not work.

"Yes, as long as it's true, the price is negotiable. How many spirit stones does that senior want?" said Shopkeeper Zhao with a look of hope.

"Three thousand high-grade spirit stones! Tomorrow's delivery, one hand to pay and one hand to deliver!" Liang Feng said.

Shopkeeper Zhao pondered it and said, "Three thousand high-grade spirit stones are too expensive, how about two thousand six spirit stones?"

Liang Feng said: "The kid went back and asked the senior with the communication charm, if you can, it will be delivered here tomorrow." Shopkeeper Zhao agreed.

On the way back, Liang Feng thought to himself: "The magic array flag can only be made by monks in the initiation period, otherwise, with his own magic array attainments, it should be very easy to earn thousands of high-grade spirit stones in the past few years." The spirit rune is easier than the magic array flag, but he only has two low-level spirit runes, with low added value, and specially made spirit runes, such as the hidden talisman that can hide the cultivation of the two grades, and he doesn't dare to take it out and sell it......"

"Shopkeeper Zhao has the cultivation in the early stage of his entry, and he seems to be trustworthy, but if he sees the wealth, he will not be spared. Therefore, it is still good to pretend that the seniors who have cultivated in the middle stage of the Dao entrust themselves to trade, although there are still some flaws. ”

"Well, this Dongqi City is under the mountain gate of Dongqi Gate, and it is strictly controlled by Dongqi Gate, so presumably Shopkeeper Zhao will not dare to kill and rob people in the city...... No matter what, you have to be careful enough to ......"

"Senior Brother Liang......" a timid and soft and sweet voice shouted.

Just stepped into the door of the Shen Dan shop, Liang Feng's eyes suddenly lit up, and he smiled: "Liu Daoyou, come to buy the elixir again today?"

The timid and soft and sweet voice of the owner is an eighteen or nineteen-year-old, graceful young woman, her skin is as delicate as jade, her face is beautiful, especially the eyes, clear and watery, you can forget your worries when you look at them, but her clothes are a little old, but the slender waist with a goose-yellow skirt looks extraordinarily rich.

"Hahaha, Senior Brother Liang, your good looks are waiting so hard for you, you go and comfort her. A few guys coaxed their voices, "Oh, Senior Brother Liang, everyone calls you Senior Brother, you still call 'Liu Daoyou' and 'Liu Daoyou'? It's too rude, at least call 'Qingqing-sister', hahaha-"

The woman's name is Liu Qingqing, and there is a woman who is slightly taller than her standing next to her, her name is Yin Ying, and her appearance is also very beautiful, especially the two big white rabbits on her chest, which are about to burst into tears, and the eyes of the guys are patrolling the place brightly or darkly. These two women are Qing people who are not far away from the Qinglou 'Yiyu Building', and often come to this Dan shop to buy some high-grade Pei Yuan Dan.

Liang Feng didn't like the jokes of the guys, he knew in his heart that it was because Liu Qingqing and the two of them were Qinglou women, so even the guys who were as humble as Danpu felt that they were superior to them and could joke with them casually. He secretly sighed to himself, even if he is the same person who has fallen to the end of the world, he will be divided into three, six, nine and so on.

"Senior Brother Liang...... , Last time I calculated according to the method you said, the circular veins in the spirit rune are really much more accurate and smooth, thank you, Senior Brother Liang!" Liu Qingqing took a few steps closer to Liang Feng and was slightly blessed.

Liang Feng said with a smile: "With a lot of effort, Liu Daoyou doesn't need to take it to heart. He sighed secretly, Liu Qingqing was sold to the Qinglou, and the situation was no better than when she was sold to the Lingshi mine as a slave miner, but she still maintained her enterprising heart and learned to draw talismans whenever she had time, but unfortunately she was also in such a situation and couldn't help her much.

Liu Qingqing smiled, like a hundred flowers blooming, and said, "Senior Brother Liang's gesture has solved the matter that the little woman couldn't think about...... Senior Brother Liang, there is another question here, how should this be calculated?" She handed over a piece of paper, on which was written a question - the most basic spiritual roots known are five kinds of metal, wood, water, fire, and earth, if a person has four spiritual roots and the proportion of each spiritual root is different, then how many combinations of spiritual roots does he have?