Chapter 178 Hundred Thousand Spiritual Stones

Cao Rui rushed back to the gate of the Spirit Beast Sect after galloping all the way.

As soon as he landed in the Refining Institute, a divine sense locked onto him. Then, Wu Qingxuan flashed in front of him.

"Finally I caught you, where have you been?"

"Haha, Cao Rui, look at what I have!" Wu Qingxuan excitedly threw an item into Cao Rui's hand.

Cao Rui looked closely and found that it was the second-order signal tower designed by Wu Qingxuan himself.

He looked at Wu Qingxuan in surprise: "I didn't expect that you also refined a second-order signal tower today!"

Wu Qingxuan smiled proudly: "Of course, after all, I am also the head of the Refining Institute, and it is worth my time and energy."

Cao Rui carefully looked at Wu Qingxuan's signal tower and found that except for the rune system that required him to engrave a spiritual sound point, there were no problems in other aspects.

The rune system of the spiritual sound point can be engraved by Cao Rui in a few minutes, which is not a big problem.

However, compared with his own perfect quality, Wu Qingxuan's signal tower can only be regarded as a beginner.

Nevertheless, for Wu Qingxuan who has no experience beads, it is already a very good achievement.

Wu Qingxuan looked at Cao Rui expectantly: "How is it, my level is not bad, right?"

Cao Rui smiled and nodded: "Well, very good, worthy of being the head of the Refining Institute." Cao Rui praised against his conscience.

Wu Qingxuan couldn't help but smile slightly.

"Ahem, let's test the effectiveness of this first signal tower." Wu Qingxuan said.

The first one? Cao Rui opened his mouth, but still didn't explain. Forget it, let's let this old master be happy for a while, and the imperial envoy nodded in agreement.

Wu Qingxuan activated the signal tower, and Cao Rui held the Lingyin jade pendant and rushed to the outside of the sect again...

When it was about 900 miles, the signal of the Lingyin jade pendant was interrupted.

With Wu Qingxuan's current level of refining, the second-level signal tower he refined was obviously much worse than the one refined by Cao Rui.

However, considering that some of the immortal cultivation forces in the southwest of Yunzhou are not far away from each other, it is necessary to deploy some short-distance communicators.

Back to the Refining Institute, Wu Qingxuan looked at Cao Rui with great interest: "The signal is interrupted within a range of almost 900 miles, and it is not much different from the target of 1,000 miles."

Cao Rui did not say anything, patted the storage bag, and directly threw the second-level signal tower he refined to Wu Qingxuan.

Wu Qingxuan was stunned at first, then he looked at the object in his hand and his eyes widened. He quickly used his spiritual sense to explore the details of the second-level signal tower in his hand, and a look of shame appeared on his face.

"You have also refined a second-level signal tower? When did this happen?"

Cao Rui coughed lightly and answered awkwardly: "I just successfully refined it today."

Wu Qingxuan sighed: "Your talent for refining is really terrifying, I am ashamed of myself!"

"So, how far can the signal tower you refined cover?"

Cao Rui pondered for a moment and said slowly: "About two thousand miles."

"Two thousand miles... I am afraid I will never be able to refine such a powerful signal tower in my lifetime."

"The signal tower was your idea, and I did the refining material configuration myself, but the signal tower you refined is so much better than mine. Well, how about giving you my position as the head of the Refining Academy?" Wu Qingxuan said with some disinterest.

Cao Rui waved his hand, "I am already the head of the Alchemy Institute. I am too busy with the affairs of the Alchemy Institute to take the position of the head of the Equipment Refining Institute. You should just sit firmly on the position of the head of the Equipment Refining Institute."

"Let's not talk about this. Let's first make the allocation of the signal tower."

"Allocation? What allocation?" Wu Qingxuan raised his eyebrows.

Cao Rui took out a map, which was the map he had prepared in Qingling Xiuxian Market before.

This map marked all the Xiuxian forces in the southwest of Yunzhou.

And they were connected linearly.

The signal tower that Cao Rui wanted to deploy was on this line.

As long as this line was completed, the distance of tens of thousands of miles from one end of the line to the other end of the line could also be completed by using the Lingyin Jade Pendant.

Cao Rui pointed to a location on the map and said, "Look, there are more than 1,800 miles between this market and Murong Xiuxian Family, so it is just right for the signal tower I refined."

Cao Rui pointed to another location: "The ruins and spiritual land here are only more than 300 miles away from this market, and the signal tower you refined can completely cover it, or even more."

After hearing what Cao Rui said, Wu Qingxuan put away his lost thoughts, immersed his mind on the map, and calculated carefully with Cao Rui.

After careful calculation, Cao Rui and Wu Qingxuan found that the distance of two thousand miles and one thousand miles was almost half each.

According to the ideal situation of the linear map drawn by Cao Rui, Cao Rui would need to refine thirty signal towers and Wu Qingxuan would need to refine twenty-eight signal towers.

To be on the safe side, in case of friction between the Xiuxian forces near the signal tower, Cao Rui and Wu Qingxuan were prepared to refine thirty-five signal towers each.

The extra signal towers can be stored for backup.

Cao Rui asked Wu Qingxuan to help refine the signal tower in order to prevent any problems. If he is no longer in Yunzhou in the future, Wu Qingxuan can also help.

The industry of the Lingyin Jade Pendant must be passed down.

At present, Cao Rui has not selected a successor, and Wu Qingxuan is the only reliable person who knows the operating principle of this system.

At the critical moment, Cao Rui copied the method of connecting the magic circle on the Lingyin Jade Pendant, as well as the embellishment of the subtle runes and the rune system of the Lingyin Point, so that Wu Qingxuan could quickly master the operation of the Lingyin Jade Pendant.

At this time, Wu Qingxuan said: "A signal tower, excluding the cost of the Lingwen Xuanjing, also requires 1,500 spiritual stones."

"Seventy signal towers require 105,000 spiritual stones!"

"Cao Rui, why don't you ask the sect master to borrow some flowers?"

Cao Rui took out a storage bag directly, took out the spiritual stones and put them in, and waved the storage bag into Wu Qingxuan's hands.

"The sales of the Lingyin Jade Pendant and the recharge of the Lingyin Points are not bad."

"One hundred thousand spiritual stones, I can still afford it." Cao Rui said with a smile.

Wu Qingxuan took the storage bag, glanced at the spiritual stones in it, and more intuitively realized how profitable it was for him to follow Cao Rui.

Cao Rui is not only a genius in alchemy and weapon refining, but also a business genius in the world of immortal cultivation.

Could it be that Qingling Market will become the next Lingjian Sect?

With a thousand thoughts in his mind, Wu Qingxuan picked up the storage bag: "The refining materials for the signal tower cannot be sloppy. I will go to purchase them myself. You wait here."

Wu Qingxuan flew away quickly.

Cao Rui waited leisurely in the Spirit Beast Sect. "One hundred thousand spirit stones were spent in the blink of an eye. I hope I can successfully create the Lingyin World, the Douyin version of the immortal cultivation world..."