Looking at that stone, Ye Xiao found that this was a black stone with a complex formation engraved on it.

He took the black stone in his hand and injected it with his spirit energy.

The moment spirit energy was injected inside the black stone, it began to shine with a white light.

That middle aged man when saw the white light shining from the black stone, he shook his head in disappointment, wrote down something on a paper and then said, "Alright, it's done. You are qualified to participate in this competition. It will held after five days. Good luck!"

He gave Ye Xiao a number plate.

"Ok Thank You." Ye Xiao said. He put down the black stone on the table and took the number plate from the hands of the middle aged man.

"May I ask a question?" Ye Xiao again looked at the middle aged man and said.

"Yes, you can ask."

"What is this black stone and what was the white light that came out from it after I injected my spirit energy in it?"

Middle aged man again raised his head and looked at him and then said, "This black stone is known as elemental stone. From the name itself you can find out that it has something to do with the elements."

"There are five main basic elements. Every elemental stone has different colour and based on its colour, we separate it in five types. Red for fire elemental stone, green for wind elemental stone, Blue for water elemental stone and so on."

"These elemental stones helps people to fasten their cultivation and raise as well as strengthen their own particular elements. For example, if a person has a fire elemental body, he can quickly increase his cultivation and strengthen the fire element in his body with the help of red elemental stone which is also a fire elemental stone."

"These elemental stones are the same as the spirit stones with only a single difference. It has a particular element in it while the spirit stone does not. A particular elemental stone can only be used by a person of same elements."

"Finally comes this type of black elemental stone. As you can see it is black, it means it also does not have any elements in it. But, it is also different from a spirit stone because it does not possess any spirit energy in it."

"But this black elemental stone still has its uses as it can help us to find out a person's element after formation master engrave a formation on it."

"Same as before, when a person with fire element injects his spirit energy in it, it will shine with a red light. For wind element, it will shine with a green light and so on."

"Your white light shows that you did not possess any type of elements."

"Oh, so that's how it is." Ye Xiao was taken aback after finding out about the elemental stones.

"What are you standing here for? Now, get lost. I've already answered your question. Don't block the front. Others also needed to register here." Seeing that Ye Xiao was still standing, that middle aged man shouted at him.

Ye Xiao hurriedly came out from the line and started walking back to the inn.

He never thought that there would be another type of spirit stone known as elemental stone in this world. After knowing the properties of elemental stones, he regretted slightly that he does not have any elemental body.

As he was walking back toward the inn, suddenly he came to abrupt stop in his way. He was looking at something on his right side. It was a huge building of four floors. On the very top of the building, two big words could be seen written there.

Alchemist Association!

From the memories of the Ancient Pill god he absorbed, He knew that there were many powerful forces in this world and this Alchemist Association was one of them. Not only that, the Alchemist Association is one of the most powerful force present there. As the name applies itself, Alchemist Association was for alchemists and it was a gathering place of many alchemists. Here, many people come to let an alchemist concoct a pill for them or to buy many herbs and pills.

Approximately, every big city in the Azure Sky Continent has a branch of Alchemist Association. In front of him was also a branch of the Alchemist Association.

He turn his right and walked quickly, arriving in front of the Alchemist Association. After standing in front of the Alchemist Association for a while, Ye Xiao finally entered it.

Even though he had the memories of Ancient Pill God, when he really went inside the Alchemist Association, he was stunned for a moment. It was a very spacious hall inside. There was three counters at the right side of the hall and there was also many rows of shelves present there whose front was covered with a thick layer of two sided glass. Inside were many types of medicinal plants and pills present.

The variety of medicinal plants and pills in the inside those shelves should be more than enough to compare with what one can find outside in the whole Azure Dragon Country. If something related to medicine and pills couldn't be found here, then it definitely could not be found in other places as well.

There were a crowd of peoples present in front of the shelves, looking at the medicinal herbs and pills to buy. Seeing the pills present there, even Ye Xiao's mind stir up a little as there were many types pills and medicinal herbs. Some were for raising one's cultivation, some for strengthening the body and some were for the healing purpose. In all, there were every types of medicinal herbs and pills present inside the shelves.

From the middle of the hall, a big ladder was going to the second floor. It was made of some extremely expensive white jade.