Everyone couldn't help but look closely and discovered that the two hand-cranked telephones were connected by a wire.
Ma Xiaotao asked, " Little Yu, what's this for?"
Cao Yu picked up the telephone on the table and began to demonstrate, explaining, "This thing is like having a telescope; that means no matter how far away you are, as long as you have this, you can hear what I say."
Hearing this, Ma Xiaotao became even more curious and insisted on trying it.
At first, they were ten meters apart, and eventually they were one hundred meters apart.
After several experiments, Ma Xiaotao was surprised to find that as long as the middle line was long enough, she could hear what Cao Yu was saying no matter how far away she was.
Tang Ya, Ning Tian, Jiang Nannan, and Xiao Xiao, who were on the other side, couldn't resist their curiosity and happily played with the two telephones together.
Cao Yu chuckled and said, "Haha, soon we'll be able to do this without these telephone lines."
Ma Xiaotao looked at him with some surprise and said, "It's really hard to imagine. No wonder the Sun Moon Empire is so desperate to develop Soul Tool. If they were used for war command, it would be so much more convenient."
"If we could make it even smaller, so it could be worn on the ear, it would probably make things much easier in battles against Soul Master."
After Ma Xiaotao's reminder, Cao Yu suddenly thought of Bluetooth headphones; she had almost forgotten about them if Ma hadn't mentioned it.
Huo Yuhao continued leading Cao Yu forward, then stopped in front of a machine.
This behemoth was still running nonstop, emitting a loud "boom-boom" sound.
" Brother Yu, I've discovered that those engraved Soul Tool arrays can also be replicated, and their function is somewhat similar to that of circuit boards; they can substitute for each other to some extent."
After a pause, Huo Yuhao said, "However, the effectiveness of the replicated magic array seems to have decreased considerably; this is the shortcoming we've discovered so far."
One after another, seemingly identical Soul Tool arrays were stamped out by the machine. Cao Yu took them in his hand and examined them, discovering that they indeed had quite a few flaws.
"The problem still lies with this machine. Semi-automatic is still not enough. We need to improve the circuit board and then develop a CNC console; otherwise, we still won't be able to control the precision."
Huo Yuhao nodded, silently keeping this in mind.
Before long, everyone settled down and focused on their work. Although it was Ma Xiaotao's first time here, she had already developed a strong curiosity about these technological products, and she couldn't help but follow Cao Yu, helping out and observing at the same time.
Currently, these prototypes, after continuous improvements, are transported back to Star Luo City by specialized personnel.
Then, with the help of his brother-in-law Xu Jiawei, they can manufacture them in batches. It shouldn't be too long before these hand-cranked telephones are available on the market.
However, Star Luo City's product manufacturing efficiency is still too slow, and it needs to improve its industrial base. Let's try to build fully automated industrial machines with CNC tables.
A few days later, Cao Yu took some time to visit the Treasure Gathering Pavilion in Shrek North City. He first went to the counter and placed the two hand-cranked telephones on the table.
These two are the initial versions; the improved versions have already been shipped back to Star Luo City.
Xiao Hong asked eagerly, "Respected Mr. Cao, are you here to auction these two items?"
Cao Yu nodded and replied, "Yes, try your best to help me auction it off in the next few days."
"Then what are these two things used for? What level are they Soul Tool?" Xiao Hong asked curiously, after all, this was the first time she had ever seen these things.
However, a wealthy VIP like Mr. Cao probably wouldn't try to fool people with useless things, so Xiao Hong could only categorize this item as a newly released Soul Tool, which was probably of a high grade.
However, she was stunned the next moment when Cao Yu shook his head and said, "This is not Soul Tool, and its function is very simple. No matter how far apart the two telephones are, as long as the line in the middle is long enough, they can communicate with each other."
Xiao Hong, not believing in such superstitions, tested it out and finally found that the two devices really did work as Cao Yu had said.
This item is beyond monetary value. At this moment, she was a little undecided, so she summoned Elder Lin, the head of the Treasure Gathering Pavilion.
After using it, Elder Lin asked with a serious expression, " Little Yu, are you really determined to auction this off?"
"Yes, that's right." Cao Yu nodded in response.
Elder Lin said with some disbelief, "This is currently the only thing that can achieve long-distance communication. Even the Sun Moon Empire cannot do it, so you can imagine its value."
As far as Elder Lin knows, some of the higher-level Soul Tool currently circulating in the market can only record sound, but cannot achieve long-distance communication.
So this is the first time such a thing has appeared on the mainland. You could say that scarcity makes it valuable, but Cao Yu is thinking of auctioning it off. Elder Lin even wondered if his head had rusted bald.
After confirming that Cao Yu would not change his mind, Elder Lin asked, "Who made this?"
"That's a secret." Cao Yu smiled, but Elder Lin couldn't help but laugh.
"You're such a clever little devil, if the academy wanted to investigate, wouldn't they have found out? Tell us, we're not going to steal your talent."
"Okay, I opened a research institute in the suburbs specifically for making these things, and Huo Yuhao is in charge of this project."
"Your classmate?"
Seeing Cao Yu nod, Elder Lin shifted his gaze to the other side, carefully examining the two hand-cranked telephones on the table. After pondering for a moment, he said, "You brat, didn't you ever think about cooperating with the academy's Soul Tool Department? Why did you insist on setting up your own research institute? Are you being so distant?"
After saying that, Elder Lin glared at him a few times with a look of good annoyance.
Cao Yu pretended not to see it and said with a grin, "We have already cooperated with the Star Luo Empire, but... I don't recommend that the academy's Soul Tool Department join in. I can cover the research funding."
Elder Lin stared at him with a slightly meaningful look, then smiled faintly and said, "You little rascal, do you think I don't know what you're thinking? You just want to get your hands on the Soul Tool Department, don't you? But I can't decide that. I'll go back and have a chat with those old guys first."
"Alright, then I'll leave the auction of these two items to you."
After waving goodbye to Elder Lin and the others, Cao Yu left Treasure Gathering Pavilion.
Less than two days later, the two hand-cranked telephones finally appeared at the auction, and Cao Yu was fortunate enough to witness the auction firsthand.
The auction was incredibly lively, with the forces of several major empires vying for the prize. In the end, the Sun Moon Empire won the bid for a staggering 900 million Gold Soul Coin, a truly massive financial blow.
However, Cao Yu himself deserves credit for this as well. Cao Yu couldn't understand why those guys from the Sun Moon Empire were so obsessed with these things.
So much so that even as Cao Yu kept raising the price, they still bought it, making him arguably the most unfortunate sucker in history.
This also made the hand-cranked telephone famous throughout mainland China.
While the Sun Moon Empire was still researching this technology, the Star Luo Empire had already begun selling these hand-cranked telephones in large quantities within just a few weeks.
This was the first time the Sun Moon Empire had encountered a technological setback.
(End of this chapter)