The passage was pitch black and deep, as dark as ever, and the black mist floated in a thick air, revealing an atmosphere of unknown horror. Pen "Fun" Pavilion www.biquge.info

"This damn black fog has been devouring my True Yuan Force! Fortunately, my cultivation has now stepped from the middle stage of the innate third rank to the late stage of the third rank of the innate level, and the true yuan power is much stronger. Ye Xing said secretly in his heart, his eyes moved, looked into the depths of the passage, and immediately strode forward.

The passage was poorly lit, dim and narrow, only a meter wide.

All the way forward, left and right, about 100 meters forward, suddenly wide in front of me.

Ye Xing came to a large dungeon.

The black stone floor, the black stone walls, and the black stone roof make up this eerie black stone dungeon, and the size and layout of the dungeon are the same as the one of the old man in black.

The only difference, if anything, is that this blackstone dungeon is not bound by iron chains, only black iron rods connect the roof to the ground, separating the corner one-third of the blackstone dungeon into a small iron dungeon.

And in the iron prison was imprisoning an old man in a green robe, which was in tatters, full of dirt and scraps of grass. His hair was as messy as a chicken coop, unkempt, and unkempt.

At this moment, I saw that the old man in the green robe was concentrating, writing and drawing on the black stone ground with his fingers, and he didn't know what he was muttering.

"This person should be the medicine elder mentioned by Ren's predecessors!" Ye Xing's eyes were full of anticipation, and he immediately walked forward and came to the iron prison.

"Tianyang Flower and Earth Tooth Grass are the main medicines for refining the Heaven and Earth Guiyuan Pill. It's just that the attributes of the Tianyang Flower are too strong, the herbs of the Earth Tooth are cold, the heaven and the earth are separated, and the yin and yang are hedged, if they are forcibly fused together, I am afraid that these two elixirs will be scrapped. It's just that it stands to reason that supplementing with the star fruit can neutralize the medicinal properties of both of them. Why did the old man use the Starlight Fruit to supplement the Tianyang Flower and the Earth Tooth Grass before, but he could only refine the middle and lower grade Heaven and Earth Guiyuan Dan, what is the reason for this?"

Through the iron fence, Ye Xing finally heard the words of the green-robed old man talking to himself, he seemed to be studying the formula of an elixir.

It's just that he studied and thought so intently that he didn't seem to notice Ye Xing's arrival.

"Junior Ye Xing greets the senior, you should be the medicine veteran that the predecessor Ren said!" Ye Xing bowed and said loudly.

The sound is not loud, but it is not small, and it stands to reason that it should be audible at such a close distance.

However, the green-robed old man didn't seem to hear Ye Xing's greeting, and was still writing and drawing on the ground, immersed himself in his own world, studying the formula of the elixir.

Sometimes pondering, sometimes meditating, sometimes frowning, sometimes scratching heads.

"The quality of the middle and lower grade Heaven and Earth Returning Yuan Pill is too low, I am afraid that half of the medicinal properties of this Tianyang Flower and Earth Tooth Grass have not been brought into play, could it be that the medicinal effect of the Starlight Fruit is too weak, not enough to neutralize the cold attributes of the Heavenly Yang Flower and the Earth Tooth Grass?"

His hair, which was already messy, became even more unkempt as he scratched hard.

"Medicine seniors, medicine seniors!"

Seeing that the green-robed old man didn't react, Ye Xing couldn't help but call out twice.

"That's not right, the Starlight Fruit is also a rare spirit fruit, and in terms of preciousness, it is not much weaker than the Heavenly Flower, the Earth Tooth Grass. It stands to reason that they are fully qualified to be worthy of these two elixirs. ”

The green-robed old man looked extremely depressed, "But the actual refining effect can only exert less than half of the medicinal properties of Tianyang Flower and Earth Tooth Grass...... This ......"

"Hey, by the way, it's not that the medicinal properties of the Starlight Fruit have not been fully exerted. The green-robed old man patted his head, and suddenly realized, the whole person was extremely excited, "Haha, yes, yes." It must be so. If the medicinal effect of the Starlight Fruit can only be exerted half, it will naturally only be able to neutralize half of the Tianyang Flower Ground Tooth Grass. Only with the dew of the night dew can the medicinal effect of the starlight fruit be perfectly exerted, and then fully neutralize the cold medicinal properties of the Tianyang Flower and Earth Tooth Grass. ”

"In this way, we will definitely be able to refine the top-grade Heaven and Earth Returning Yuan Pill, and even the top-grade Heaven and Earth Returning Yuan Pill will be completely fine. ”

With the completion of the research of the elixir, the old man in the green robe was very happy, and his heart was full of a sense of achievement. It's like a mathematician tackling a problem, or a scientist making a major invention.

"Hey, boy, when did you come?" the green-robed old man looked at Ye Xing outside the iron prison with a surprised expression. Returning from the world of alchemy, he finally found that there was a guest in his dungeon.

"I've been here a long time ago, okay! Your old man just found out!" Ye Xing instantly looked full, and couldn't help but complain in his heart.

However, Ye Xing didn't dare to say this kind of thing, so he immediately stepped forward and bowed, and said respectfully: "Junior Ye Xing, meet the medicine seniors." The junior was introduced by Ren's seniors, and Ren's seniors said that your old elixir's art is unparalleled in the world, and he asked me to learn from you the refining method of the Condensing Pill, I wonder if the seniors can give you some pointers for the juniors?"

Ye Xing's attitude was very respectful, and he patted his ass without a trace. In his heart, he was slightly apprehensive, after all, the art of alchemy was extremely precious, and it represented a noble status and endless wealth.

"Hehe, the old devil can even spit out two good words in his mouth, which is quite rare. The green-robed old man smiled: "Boy, do you have paper and pen?"

"Yes, yes! I have a lot of pens and paper!" Ye Xing's eyes lit up, and he hurriedly opened the Qiankun bag, took out a large stack of notebooks from it, and handed it to the green-robed old man.

"Well, yes, yes. With so much paper, it will be much more convenient for the old man to write and draw in the future!" The old man in the green robe nodded with satisfaction and asked, "What about the pen?

"The pen is not in the notebook. Ye Xing pointed to the ballpoint pens on the notebook and said: "This is called a ballpoint pen, not a traditional brush, but it should be much more convenient to write than a brush!"

The green-robed old man immediately took a ballpoint pen from his notebook.

"What about ink? can't this pen write without ink?" the green-robed old man looked suspicious and curiously observed the ballpoint pen in his hand.

"You don't need ink, there's ballpoint pen water in the ballpoint pen itself. Medicine seniors, ballpoint pens are different from brushes, and this is how to hold handwriting!" Ye Xing immediately demonstrated the correct writing posture of a ballpoint pen.

The green-robed old man immediately learned Ye Xing's handwriting gestures and began to write.

"Hey, it's really handy. The green-robed old man looked surprised and said: "How did you make this strange thing, it saves the trouble of getting ink, and it is indeed much more convenient!"

The green-robed old man wrote very quickly, and in less than ten breaths, he wrote several pages of paper. His handwriting is beautiful, between iron paintings and silver hooks, but there is a vibrant artistic conception in his lines.

"Okay, in addition to the Condensing Pill, the old man has written a few more Dan prescriptions, you can take them to practice your hands first, if you don't understand something, you can come to the old man at any time!" The green-robed old man tore off the few Dan prescriptions from his notebook and handed them to Ye Xing.

"Thank you, senior!" Ye Xing looked extremely excited, and hurriedly took the pill prescription in Yao Lao's hand and read it carefully.

The Dan prescription records in detail the formula ratio of various elixirs, refining methods, precautions and know-how, and so on.

The first pill that caught the eye was naturally the Taixu Condensing Divine Pill that Ye Xing had always wanted. With the Taixu Condensing Divine Pill, the spiritual power will be able to increase rapidly in the future, and the speed of cultivating martial arts secrets will definitely improve by leaps and bounds.

"Great, I can finally refine the Tai Void Condensation Divine Pill. I'm looking at other pills, this medicine veteran is very good, in addition to the Taixu Condensing Divine Pill that has become extinct in the martial arts, he also prepared a few other ordinary pills for me to practice hands!"

Ye Xing continued to flip down, and saw that the second Dan Fang was exactly five big characters - Sanqing Juyuan Dan.