The top floor of Wangyuan shop.

Lin Feng had no intention of leaving, so he changed his words and asked, "Daoyou is a pharmacist?"

Hearing this, the old man was not surprised, there were many bottles and cans on the wooden shelves in his room, and the smell of medicine in the room was strong, and it was not surprising that the other party guessed the identity of his pharmacist.

"That's right!" the old man's face softened a little, and he replied casually.

Lin Feng said solemnly, "In that case, as long as Daoist friends show me that item, I will give Daoist friends a second-grade low-grade potion formula, and I can also make a Dao Heart Oath, and I will never reveal a word about today's matter!"

"Second-grade low-grade formula!" the old man subconsciously exclaimed.

As a third-grade potion master in the Soul Infant Stage, he knew that each potion formula was a priceless treasure, and he had been collecting it for hundreds of years, and he only had a dozen of them in his hands, and most of them were first-grade formulas.

And Lin Feng in front of him opened his mouth to send out a second-grade low-grade potion formula, this is the first time the old man has seen such a thing.

"Isn't Daoist friend joking?" the old man asked in a deep voice with a straight face, but he was really moved.

"Of course not!" Lin Feng's expression was very solemn.

The old man pondered for a moment, raised his eyebrows, and said, "Daoist friend wants to confirm whether the items on the old man's body are what you are looking for, right?"

"Daoist friend is right!" Lin Feng didn't want to go around in circles, so he admitted directly.

The old man nodded, the item he found had not been known for hundreds of years, he didn't believe that there would be such a coincidence, what Lin Feng was looking for happened to be the treasure he had gotten.

"If Daoist friends make a Dao Heart Oath, I will agree to this matter, but I want to take a look at the formula first. The old man still didn't resist the temptation of the formula, and agreed to it.

"Of course there is no problem!" Lin Feng was very happy in his heart.

His expression was flat, he took out the blank jade slip and burned a second-grade low-grade antidote recipe and instructions in the jade slip, but did not burn the refining experience, and then decisively handed it to the old man.

The old man held the jade slip and closed his eyes slightly to read it carefully, and after a moment's effort, he muttered in surprise, "Wonderful! These nine elixirs can produce unexpected detoxification effects when combined. ”

The old man opened his eyes, he was not in a hurry to ask for the refining experience of this formula, and looked at Lin Feng with great determination.

Of course, Lin Feng understood what the old man meant, and without hesitation, he stretched out three fingers and put them on his chest, making a Dao Heart oath that he would not reveal a single word.

He had already thought that he would not reveal this secret whether the item in the old man's bracelet was a guide or not, so it didn't matter to him whether the Dao Heart Oath was issued or not.

The old man nodded with satisfaction, took out a five-inch square exquisite jade box, and suddenly, Lin Feng felt a dark energy on the jade box, and after a while, he began to beat the drum in his heart, looking at the size of the jade box, he couldn't put a guide who was more than a foot long.

The old man carefully opened the jade box, and a fist-sized dark silver spar came into Lin Feng's eyes, and there was nothing else in the jade box.

A look of disappointment flashed in Lin Feng's eyes, and he was just about to open the mountain pass to speak, when the excited voice of the remnant soul came into his mind.

"Boy, your good luck is back!"

"Remnant Soul...... This is not a guide!" Lin Feng said helplessly in his heart.

"Of course I know, but it's also very important to you, no matter what the cost, you have to get this hedron, and I'll explain it to you later. The remnant soul spoke in a commanding tone.

"It seems that this item is not what the Taoist is looking for. The old man observed the details and saw what Lin Feng was thinking, and he put away the jade box after closing the lid.

"Fellow Daoist and slow...... I want to exchange a second-grade high-grade potion recipe for this thing, hoping that Daoist friends can cut love. Lin Feng's tone was very polite.

Knowing that the old man, as a mid-stage spirit infant pharmacist, would definitely not lack spirit stones, and in exchange for the items that the old man regarded as treasures, Lin Feng could only bleed again.

"Second-grade high-grade formula!" the old man's movements immediately paused, frowned, and fell into contemplation, weighing the pros and cons.

He has always wanted to comprehend the essence of dark energy from this object and get great benefits, but he has not gained anything for many years, in fact, he has long had the idea of giving up.

He only had a total of three second-grade high-grade potion formulas, and I had to say that the conditions that Lin Feng had prescribed touched his weakness again.

Since it is hopeless to comprehend the essence of dark energy, it is better to exchange for a formula that you don't have, that way, it can also be of great help to your potion technique.

Thinking of this, the old man gritted his teeth and raised the conditions a little, and said, "I can agree to the conditions of Daoyou, but I want a second-grade high-grade healing potion formula." ”

Hearing this, Lin Feng was overjoyed, but he still said with a sad face, "Daoist friends are really good at picking, I only have one recipe for this, so I will exchange it with Daoyou." ”

Lin Feng stopped talking nonsense, made up the refining experience of the formula just now, randomly picked a second-grade high-grade pulp formula, burned all the contents and handed it to the old man.

The old man excitedly took the jade slip and read it carefully, and kept praising it in his mouth, and after dozens of breaths, he opened his eyes and pushed the jade box to Lin Feng without saying a word.

After putting away the jade box, Lin Feng breathed a sigh of relief, and this transaction was a great joy for everyone.

The old man clenched his fists and smiled, "Old man Gu Tiancheng, don't you know the name of your friend?"

"Lin Shan!" Lin Feng returned the salute with his fists, without using his real name.

"If there is a chance, the old man hopes to discuss the potion technique with his fellow Daoists. Gu Tiancheng nodded and smiled.

"I still have some important things to ask, and I will ask Gu Daoyou for advice in the future. Lin Feng said modestly and politely and offered to leave.

It is reasonable for the old man to guess his identity as a pharmacist, except for the pharmacist, I am afraid that no one can take out two second-grade potion formulas at the same time, and it is the kind that is not distressed.

If you want Gu Tiancheng to know that he only has a mid-stage Jindan cultivation, he is already a third-grade high-level potion master, I am afraid that Gu Tiancheng's jaw will be shocked.

Gu Tiancheng nodded with a very useful smile, and did not force Lin Feng to stay, and politely sent Lin Feng out of the room.

Out of the Wangyuan shop, Lin Feng strode into one of the largest refining material shops in Jinsha City, and behind the counter, a middle-aged man in blue clothes and a square face in the early stage of Jindan hurriedly walked a few steps to greet Lin Feng in person.

"What does this senior need?" the middle-aged man said respectfully, clenching his fists.

Lin Feng didn't talk nonsense, took out a Ziyuan spar that had run out of energy, and asked, "Can you sell this kind of spar in your shop?"

The middle-aged man was stunned, took a gray-white stone the size of a spirit stone, and observed it carefully.

After more than a dozen breaths, the middle-aged man frowned tightly and said, "It looks like this thing is very similar to a spirit stone that has lost its spiritual power, but it seems to be very different, and the younger generation has never seen it." ”

Lin Feng nodded and said, "This is called Ziyuan Crystal, do you know where you can buy this thing?"

The middle-aged man said without thinking, "The younger generation has been a shopkeeper here for decades, and I have never heard of it, let alone seen where this kind of Ziyuan spar is sold." ”

Lin Feng didn't ask any more, took back the spar and walked out of the store disappointed.

Then he went to several relatively large material stores in the city, and even inquired about the places that sold news, and the answers he got were similar, no one had heard of Ziyuan spar at all.

In desperation, he had no choice but to give up and continue to look for the Ziyuan Crystal, found a secluded place, and made sure that no monk noticed him, so he escaped underground.

Outside Jinsha City, on a bare mountain peak, Lin Feng put the compass into his bracelet and looked at the sky in the distance worriedly, unlike the previous two times, this time the accuracy of the compass was greatly reduced, and the dark energy fluctuations searched were extremely weak.

"Remnant Soul, the Ziyuan Crystal can still be used for the last time, if we can't find a guide this time, what should we do?" Lin Feng had no bottom in his heart, and without a compass to locate him, it would be difficult to find a guide.

"I hope we are lucky, otherwise, you have to find a way to find the Ziyuan spar, this spar is an item in the fairy world, I don't know if there is one on the Zhongyuan Continent. "The remnant soul is helpless, and there is no better way for it to do it at the moment.

"That's all there is to it!"

Lin Feng was even more confused, and his words changed, "What is that spar Gu Tiancheng?"

The remnant explained, "That spar is called Xingchen Sand, and it is extremely difficult to find in the fairy world, but I didn't expect to see it here, and it is not small, and most importantly, it can provide energy for the Dark Gate. ”

Lin Feng said, "I haven't heard you say that the Dark Gate also consumes energy. ”

"It's not too late to say, if you use the Dark Gate many times, there will be a lack of energy that will affect normal use, and with this piece of Star Sand, you will be prepared." ”

"It doesn't look like we've had a lot of luck. "Accidentally getting an item that was very useful to him, Lin Feng was in a better mood.

He sent the spirit boat to fly into it, set the flight direction, and the spirit boat flew quickly to the southeast, this time his destination was more than forty thousand miles away from Jinsha City.

Twenty days later.

On a lifeless mountain peak, Lin Feng frowned and looked at the compass in his hand, the last piece of Ziyuan Crystal energy had been exhausted.

The compass cable turned out to be very inaccurate, only showing that the item he was looking for was in a city with a radius of nearly 100 miles in front of him, which made his heart sink.

The city in front of it is called Qingfengcheng, and the city wall made of pale cyan rock is about ten zhang high, enclosing the whole city, and the city wall is covered with traces of time, which has obviously existed for many years.

Qingfeng City has about three or four hundred thousand people, most of them are mortals, and the difficulty of finding an item of a small size in such a large city can be imagined, but the guide is too important to him, he will never give up halfway, no matter what, he must find a guide.

He walked through the city gate into the city, where the streets were lined with people dressed like the residents of Sands City, and from time to time he could see some beggars and pickpockets.

"If you're lucky enough to get within 10 kilometers of an item with dark energy, I'll be able to sense its exact location. The remnant soul suddenly sent a voice to warn.

"Shizhang! It doesn't matter if it's a pointer or not, where it is, I'll find it!" Even if it takes a lot of time to find every inch of land in the city, Lin Feng will not hesitate to spend a lot of time.

Then he began to search every place he passed, and even the houses where mortals lived, would use the invisible to cling to the surface of the ground and carefully search.

It was close to noon, and there were fewer pedestrians on the streets.

At the mouth of an alley, there stood a man in his third quarters dressed in black with a square face with a disheveled head, his micron eyes touched his chin, looking at a handsome young man in white shirts, this young man in white shirts was naturally Lin Feng.

Suddenly, the man turned his head and glanced at a group of beggars behind him, and more than thirty beggars got the order, walked out of the alley quickly, and swarmed up, surrounding Lin Feng.