Under the continuous bombardment of three thousand arrows, the two meter wide boulder had already turned into rubble and completely disintegrated.
The reason why it was so powerful was because of the Scarlet Flame Rune and the Ardent Explosion Rune, but more importantly, it was because of the grade one spirit stone that the Ardent Explosion Rune had detonated.
Under the activation of the Ardent Explosion Rune, the grade one spirit stone would violently explode and push the iron sand within the bamboo tube, causing great damage to the target …
Unknowingly, more than twenty days had passed.
With the cooperation of the three thousand female officials, Chu Xingyun wasn't worried that it would be too late. Thus, in the next six days, everyone slept for a day, and then the three thousand female officials gathered together again to strengthen the arrows.
When there were only three days left, the new type of arrow was finally finalized.
In terms of runes, there was nothing that could be changed. The Gale Rune, Sharp Gold Rune, Scarlet Flame Rune, and Ardent Explosion Rune were all perfect runes that had been explored by humans for fifty million years.
Although it wasn't that they couldn't be improved, without tens of millions of years, it would be impossible to make any progress.
The only thing that could be changed was to combine the Dao of Wind of the Demon Spirit Clan to optimize and improve the shape and layout of the arrows.
Apart from the shape and layout, he had also found the best replacement for the iron sand inside the bamboo tube.
In the underground world, there was a poisonous river. The reason why the river water was poisonous was because the river flowed through an underground desert, and the desert was filled with dark green sand.
The poisonous river was called the Underworld River by the Demon Spirit Clan, and the sand was called the Underworld Sand by the Demon Spirit Clan.
Every day, the Underworld River would bring a large amount of Underworld Sand into the underground desert, and the underground desert was formed by the accumulation of Underworld Sand carried by the Underworld River for tens of millions of years.
After hundreds of millions of years of accumulation, the Underworld Sand was almost inexhaustible.
According to Chu Xingyun's examination, the dark green sand contained a strange poison. Once it came into contact with blood, it would cause the blood to coagulate.
As a living thing, when the blood couldn't flow, it could only die.
If the sand hit the limbs, perhaps it wouldn't be a big problem. It would only cripple an arm or a leg, and it wouldn't be fatal.
But if it hit the torso or head, it would be completely over. There was no doubt that death would be inevitable.
With these grain-sized grains of Nether Sand, there was no need to waste time refining the Iron Sand.
Most importantly, the Nether Sand was inexhaustible, and it was increasing every day.
When there were only three days left, Chu Xingyun finally confirmed the final version.
Following Chu Xingyun's order, the three thousand female officials immediately moved to produce the new arrows at full speed.
Each female Demon Spirit Official could produce more than a hundred new arrows every day. After three days, they had produced a total of one million new arrows, which was enough for three rounds of competition.
Finally, a total of one million new arrows were produced. One million sharp arrows piled up into a small mountain.
Looking at the new arrows piled up like a mountain, all the female officials were very happy. With their Nirvana Realm strength, this kind of work was not enough to make them feel tired.
Looking around, Chu Xingyun said, "Alright, the new arrows have finally been developed. Next … it's time to give them a name."
As soon as Chu Xingyun's words fell, the Demon Spirit Queen said with a smile, "I think we should call it Supreme Arrow. After all … this arrow was developed under the leadership of Zhi Zun."
Shaking his head with a bitter smile, Chu Xingyun said, "No, no … this name won't do. Don't worship it!"
Seeing that Chu Xingyun rejected the name Supreme Arrow, another female official stood up and said loudly, "I think it's better to call it Gale Sharp Gold Scarlet Flame Explosive Arrow!"
Hearing this long list of names, Chu Xingyun couldn't help but chuckle. Looking at the round-faced female official, she was too simple.
Indeed, there were four runes contained within this arrow. They were respectively Gale, Piercing Gold, Crimson Flame, and Violent Explosion. However, if it really used these runes as its name, then it would be too honest. Didn't this tell everyone the types of runes on this new arrow?
Although Chu Xingyun now possessed the most complete rune inheritance, he couldn't guarantee that there wasn't the slightest bit of rune knowledge passed down from the outside world.
Now, the new arrow had already gone through three layers of encryption. It was absolutely unbreakable. Chu Xingyun didn't want to reveal the concept of the arrow's design just because of a name.
After muttering to himself for a while, Chu Xingyun said, "Although I've taught you the Dao of Runes, this new arrow is mainly the crystallization of the wisdom of the three thousand female officials. So, I think this new arrow should be called Demon Spirit Arrow!"
Demon Spirit Arrow!
Hearing this name, the eyes of all the female officials lit up. If such a powerful arrow could really be named after Demon Spirit, that would be great.
Looking around and seeing the excited and expectant expressions of the three thousand female officials, Chu Xingyun nodded decisively and said, "Alright, since no one objects, then it's decided."
Yes, yes …
Nodding excitedly, the Demon Spirit Queen said excitedly, "Please rest assured, Supreme One. We will definitely continue to research and strive to make the Demon Spirit Arrow stronger and sharper!"
Nodding with a smile, Chu Xingyun said, "Continuing the research is inevitable. But next, the most important task is to organize enough people to build a factory that produces Demon Spirit Arrows and mass produce Demon Spirit Arrows!"
Nodding decisively, the Demon Spirit Queen said, "That's easy. I just don't know … how large a factory does Supreme One want to build?"
Ten million!
Raising a finger, Chu Xingyun said, "If possible, I hope to build a factory that can produce ten million arrows a day. How about it … is there any difficulty?"
Facing Chu Xingyun's inquiry, the Demon Spirit Queen said, "No problem, absolutely no problem. In fact … our current limit can produce thirty million arrows a day!"
"What? Thirty million! "Hearing the Demon Spirit Queen's words, Chu Xingyun couldn't help but be dumbfounded.
One had to know that this new type of arrow had four major runes, and it was very difficult to draw them.
The runes were small and dense, and with the slightest mistake, they would not be able to be activated. Even the old craftsmen on the Heavenly Craft Island had to concentrate to ensure the quality.
Looking at Chu Xingyun's surprised expression, the Demon Spirit Queen was also very surprised.
Looking at Chu Xingyun in confusion, the Demon Spirit Queen said, "These four runes are the most basic runes. The lines are simple and crude, and the area is so huge. Even the most ordinary student can draw them accurately."
Looking at the Demon Spirit Queen dumbfounded, Chu Xingyun wondered if he was hallucinating.
Simple lines? Huge area! What a joke …
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