The Mortal's Path to Immortality

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 did you run off to?"

"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 Lingyin 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. It's better to let this old master be happy for a while. The envoy nodded in agreement.

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

After 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 the distance between the immortal cultivation forces in the southwest of Yunzhou is not far, it is necessary to install some short-distance communicators.

Back to the refining academy, 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 looked at the object in his hand, and his eyes widened immediately. 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 succeeded in refining it today."

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

"So, how far can the coverage range of the signal tower you refined be?"

Cao Rui pondered for a moment and said slowly: "Probably 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 it was indeed the configuration of the refining materials that I completed by myself, but the signal tower you refined has so many more colors than the one I refined. Well, how about giving you the position of 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 prepare the signal tower."

"Prepare? What preparation?" Wu Qingxuan raised his eyebrows.

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

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

And it was connected linearly.

The signal tower that Cao Rui wanted to install 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 the market here are only more than 300 miles apart, and the signal tower you refined can completely cover it or even exceed it."

After listening to Cao Rui's words, Wu Qingxuan also put away his lost thoughts, immersed his mind in 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, if there is friction between the Xiuxian forces near the signal tower, Cao Rui and Wu Qingxuan are 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 to prevent any problems. If he is not 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 a method of connecting the magic array of the Lingyin Jade Pendant, as well as the embellishment of subtle runes and the rune system of Lingyin Points, so that Wu Qingxuan could quickly master the operation of the Lingyin Jade Pendant.

At this time, Wu Qingxuan said: "A signal tower, in addition to the cost of the Lingwen Xuanjing, also needs 1,500 spiritual stones."

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

"Cao Rui, why don't you ask the sect master for a loan?"

Cao Rui took out a storage bag directly, put some spiritual stones in it, and waved his hand. The storage bag fell into Wu Qingxuan's hands.

"The sales of Lingyin Jade Pendant and the recharge of 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 realized more intuitively how much money he made by following Cao Rui.

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

Could it be that Qinglingfang City will become the next Lingjian Sect?

After 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 spiritual stones were spent in the blink of an eye. I hope I can successfully create the Lingyin world, the immortal world version of Douyin..."