I can gather experience beads

Galloping all the way, Cao Rui quickly returned to the gate of the Spirit Beast Sect.

As soon as he landed in the weapon refining courtyard, a divine sense locked onto him. Then, Wu Qingxuan flashed and appeared in front of him.

"Finally I caught you. Where have you been?"

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

Cao Rui took a closer look 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-level signal tower today!"

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

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

Cao Rui can engrave the rune system of Lingyin Point in just 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 an entry-level product.

Even so, it was a pretty good achievement for Wu Qingxuan who had no experience beads.

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 Equipment 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 didn't explain. Well, let's let this old master be happy for a while. The imperial envoy nodded in agreement.

Wu Qingxuan activated the signal tower, and Cao Rui, holding the Lingyin Jade Pendant, rushed out of the sect again...

When it was about nine hundred miles away, the signal from the Lingyin Jade Pendant was interrupted.

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

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

Back at the Refining Institute, Wu Qingxuan looked at Cao Rui with great interest: "The signal is cut off within a range of about 900 miles, and a thousand miles away from the target is not too far away."

Cao Rui didn't say anything. He patted his storage bag and directly threw the second-level signal tower he had 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 actually also refined a second-level signal tower? When did this happen?"

Cao Rui coughed lightly and replied somewhat awkwardly: "I just succeeded in refining it today."

Wu Qingxuan sighed and said, "Your talent for refining equipment is truly terrifying. I am ashamed of myself!"

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

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

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

"The signal tower was your idea, and I personally completed the configuration of the refining materials. However, the signal tower you refined is so much better than the one I refined. Well, how about I give you my position as the head of the Refining Institute?" Wu Qingxuan said with some boredom.

Cao Rui waved his hand and said, "I am already the head of the Alchemy Institute. I am too busy with the affairs of the Alchemy Institute to be the head of the Weapon Refining Institute. You should just keep the position."

"Let's not talk about this. Let's first complete the refining and distribution of the signal tower."

"Distribution? What distribution?" Wu Qingxuan raised his eyebrows.

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

This map marks out all the immortal cultivation forces in the southwest of Yunzhou.

And connected in a linear manner.

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

As long as this line is completed, the Lingyin Jade Pendant can be used to communicate over a distance of tens of thousands of miles from one end of the line to the other.

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

Cao Rui pointed to another location: "The distance between the ruins and the market is only about 300 miles. The signal tower you made is enough to cover the distance."

After hearing what Cao Rui said, Wu Qingxuan put away his lost thoughts, immersed himself in the map, and began to calculate 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 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 among the immortal cultivation forces near the signal tower, Cao Rui and Wu Qingxuan planned to refine thirty-five signal towers each.

Excess signal towers can be stored for backup.

Cao Rui asked Wu Qingxuan to help refine the signal tower in order to prevent any possible problems. If he is no longer in Yunzhou in the future, Wu Qingxuan will also be able to 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 principles of this system.

At the critical moment, Cao Rui copied to him the method of connecting the magic circle on the Lingyin Jade Pendant, as well as the embellishment of subtle runes and the rune system of Lingyin points. Wu Qingxuan was then able to quickly master the operation of the Lingyin Jade Pendant.

At this time, Wu Qingxuan said: "A signal tower, apart from the cost of the spiritual pattern crystal, also requires 1,500 spiritual stones."

"That's enough spirit stones for seventy signal towers!"

"Cao Rui, why don't you ask the Sect Master to lend you some flowers?"

Cao Rui took out a storage bag, selected the spirit stones and put them in. He waved his hand and the storage bag fell into Wu Qingxuan's hands.

"The income from the sale of Lingyin jade pendants and the recharge of Lingyin points is quite good."

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

Wu Qingxuan took the storage bag and glanced at the spirit stones in it. He then realized more intuitively how profitable the business he was doing with Cao Rui was.

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

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

After a thousand thoughts in his mind, Wu Qingxuan picked up the storage bag and said, "The refining materials for the signal tower cannot be neglected. I will go and purchase them myself. Please wait here."

Wu Qingxuan quickly flew away into the air.

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 Spirit Sound World, the Douyin version of the immortal world..."