"Qingque, what are you and Zifan and others doing~?"

In the deepest courtyard of the workshop, Li Zexuan walked into the room and asked Li Tai, who was shouting with a tube-shaped object.

Behind him were Sun Zifan, Qin Huaiyu, Li Huairen, Yuchi Baolin and others. Just after Qin Huaiyu came to "report the message", Li Huaiyu and Yuchi Baolin also ran here from all corners of the workshop.

"Oh! The mountain is here?"

When Li Tai heard the voice, he quickly put down the things in his hand, turned around and looked at Li Zexuan and said, "Captain, we have succeeded! Our experiment has been successful~!"

Standing next to Li Tai, Mo Chui from the School of Physics. He is not only a candidate for the next generation of Mohist masters, but also a technical backbone of the "killer project" of Yanhuang Academy. At this time, he was also excited.

Li Zexuan was confused when he heard this, "Qingque, what did it work? Are you talking about the speakers outside?"

"Yes, yes! That's those horns!"

Li Tai nodded suddenly, then he picked up a drawing and walked quickly to Li Zexuan, and said excitedly: "Master, you told me that day that two solutions to improve the telephone. One is to add a filter circuit inside the telephone to filter out interference noise and make the sound clearer; the other is to add a signal modulation and demodulation circuit to reduce signal attenuation and thus make the sound spread farther.

Later I thought about it and said that the second method is quite complicated and takes a long time to study, so I have thought about trying the first method in the past few days. I have tried many filter circuits with different parameters and wanted to tune the sound of the phone more clearly. Now it seems that we have almost succeeded!"

"I see!"

Li Zexuan understood immediately as soon as he heard this. He pinched his chin and nodded and said, "Well! I heard it outside just now. This sound is much clearer than before. The improvement you made is indeed useful~! Well! Not bad! Qingque, you have a strong ability to do things!"

"Hehe! Thanks to Mr. Mo Chui and Zifan and others for their help!"

Li Tai was immediately proud of Li Zexuan's praise. Suddenly, he remembered something and said, "Oh, by the way, Master Shan! We did this not just to improve the telegraph machine. I want to install this thing in every corner of the academy. In this way, whenever the academy has important things to notify students and teachers, we can use this to convey things to every corner of the academy. It is so convenient than before! Master Shan, do you think this is OK~?"

"Hmm? Install this thing in the academy~?"

Hearing this, Li Zexuan's heart suddenly moved. According to what Li Tai said, isn't that equivalent to installing a cable campus radio for the academy? Then, can't we organize a radio station in the academy later? Thinking of this, Li Zexuan looked at Li Tai with some surprise and thought that this little fat man's thinking is quite advanced!

"Well! Yes! The academy has been powered on now, and it is appropriate to install this thing! Oh, let's call this thing for cable broadcast in the future! After all, this thing is only used to disseminate information at a short distance, and its function is still somewhat different from that of a telephone!"

After pausing for a moment, Li Zexuan came to his senses and looked at Li Tai with admiration and said.

"Cable broadcast? It is widely spread, and the name Shanzhu is well named~!"

Mo Chuan, who was beside him, had a trace of light flashed in his eyes at this moment, and he bowed with a smile.

"Haha! I also think the name Shanchang is well-known! Since that's the case, let's call this thing cable broadcast in the future!"

Li Tai had no objection to the name, he smiled and said.

Li Zexuan looked at the experimental table full of machines behind Li Tai. He straightened his face and said:

"Qingque, whether it is a telephone or cable radio, it is not a very urgent matter. Your most urgent task is to build two telegram relay stations in Bingzhou and Yunzhou! In the past two days, the gentlemen of the academy have been busy reviewing the enrollment examination papers. When the academy's results are released tomorrow, the teachers and students in the academy's "trump card engineering project" will have to set off to head north. Be sure to build and debug the two telegram relay stations within three months!"

To be honest, the campus broadcast made by Li Tai did surprised Li Zexuan, but it was just a surprise. He knew very well that the current national war was approaching, and inventions like cable broadcasts that only increase the entertainment of life were irrelevant. If there was, it would be very good. If there was no, it would not affect the daily lives of the people of the Tang Dynasty.

But the telegram relay station is different. This thing is related to the direction of the war between the Tang Dynasty and the Turkic Kingdom a few months later, and the lives of the millions of people in the Tang Dynasty, so Li Zexuan had to hurry!

Li Tai said solemnly at this time: "Master, the mission of the telegram relay station is Tai dare not forget. A few days ago, I ordered the craftsmen to start producing the devices needed for the construction of the telegram relay station and the steam engine needed for the construction of the thermal power station. These things can only be manufactured in workshops, and cannot be made in other places! As for this cable broadcast, it is completely something we do in our spare time. I hope it can be installed in the academy before going to Taiyuan. This will not affect the construction progress of the telegram relay station!"

Li Tai is right. Whether it is a telegraph relay station or a thermal power station, they are all technology that transcends this era. Only the devices required in Qiquge New Workshop can barely be built, because the workshop not only has superb craftsmen, but also some machinery and equipment that are not available elsewhere!

It is no exaggeration to say that Qiquge New Workshop can fully represent the most advanced production technology level today!

Mo Chui also interrupted at this time: "Shan Chang, Qingque is right. A group of top craftsmen have gathered in the workshop to build relay stations and thermal power stations. It is expected that they can be made the day after tomorrow! As long as the preliminary experiment can be successful at the workshop, we can take these things to Bingzhou and Yunzhou~!"

Li Zexuan breathed a sigh of relief after hearing this and said, "That's great! After the initial experiment in the workshop the day after tomorrow, let's get off immediately! This time, Mr. Mo has to preside over the construction of the mountain protection array and the medical school in Yunshan. He really can't get out of his way. Mo Chui, please work hard and go with Qingque! The teachers and students in the academy's "trump card engineering project" can be dispatched by you. In addition, Qingque, you can apply for a team of guards from Your Majesty to personally escort you to Bingzhou and Yunzhou to avoid accidents~!"

Mo Chu, Li Tai bowed and replied, "Yes! The mountain leader!"

Li Zexuan nodded and said, "Well! Then you guys keep busy, I'll go to the steel mill to see!"

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Chapter completed!