It was definitely an unprecedented innovation in the Three Kingdoms period to create such a communication platform that was transmitted from thousands of miles apart. Han Zhan traveled to the end of the Eastern Han Dynasty and read hundreds of time travel novels. Although time travelers have made many dazzling inventions, no one has ever thought of using this simple and easy way to communicate to get in touch with thousands of miles apart.

But in order to keep it confidential, Han Zhan also specifically reminded Guo Jia: "If someone asks you, just say you are building a beacon tower and you must not leak the news."

"I understand." Guo Jia continued: "But it takes a long time to build a high platform. If I keep supervising the work, I may not have time to train the flag language of the messengers."

From Guo Jia's words, Han Zhan heard that he wanted to arrange another assistant for him. After thinking for a while, he said to him: "Fengxiao, what do you think of Tian Toyota Yuanhao?"

"Tian Yuanhao?"

"That's right, it's Tian Yuanhao." Han Zhan felt that putting too many advisers in Yedu would be a waste of talent, so he planned to send them out to serve as officials one after another. The construction of the communication platform was undoubtedly the best opportunity: "I think it's a bit too insignificant for him to stay in Yedu, and I want him to go to Qingzhou to serve as the chief minister."

"The lord's arrangement is very thoughtful." Guo Jia immediately agreed with Han Zhan's decision: "Since Zang Hong took office as the governor of Qingzhou, although he has worked hard, he is weak after all. In addition, Yang Qi and others from Beihai are restrained, it will be really not easy for him to accomplish anything. If Tian Yuanhao is the chief minister of Qingzhou, it will be a great help to govern Zang's management of Qingzhou well."

After arranging Tian Feng's place, Guo Jia shifted the topic to the training of the signal soldiers: "Lord, a signal platform that is thousands of miles away requires three to five thousand soldiers. If every soldier wants to understand the flag language, it may not be possible overnight."

"Fengxiao, Benhou believes that soldiers do not need to understand the flag language. The work they have to do is just to pass the flag language they see to the next high platform truthfully." Han Zhan explained to Guo Jia: "Anyone sending point, just arrange one or two compilers. They are responsible for compiling the information into the flag language, and then the signal soldiers send it out through the flag language."

"What the lord said is very true," Guo Jia thought about Han Zhan's words and found it very reasonable, so he nodded and said, "If the number of people who understand flag language can be controlled within a certain range, then even if someone attacks the communication platform and captures the signal soldiers in the future, they will not know the content of our communication."

Speaking of the communication content, Han Zhan felt that the plan he proposed was not perfect enough, and added: "In order to facilitate the compilation of information, four numbers can be used instead of one word. What is the specific word? After receiving the information, go to the Book of Songs based on the numbers, so that you can know what the other party is talking about in the messaging."

"If we follow the lord's words, the signal soldiers send a set of numbers. After we receive the information, we will search for the corresponding words in the Book of Songs based on the numbers, and we will understand what the other party is saying." Guo Jia nodded and then asked, "What type of flag should the signal soldiers use?"

"All signal soldiers use two signal flags, one red and one green." Han Zhan replied: "The flag is one foot square to facilitate the use of signal soldiers to send signals."

When Guo Jia heard that the signal soldiers were two small flags one foot square, he was a little surprised. According to his idea, when the signal soldiers were summoning on the high platform, they must have used a red flag, so that they could see clearly from a distance, but they did not know that it was a new type of flag.

"Fengxiao, in order to facilitate the compilers to edit information, I have just figured out a set of numbers and just wrote them for you to see." Han Zhan said, picking up the paper and pen and writing the numbers "1, 2, 3...9, 0" on it.

Guo Jia tilted his head and looked at the Arabic numerals written by Han Zhan on the paper, and asked in surprise: "Lord, what are you writing? Why don't you recognize your subordinates at all?"

Han Zhan thought to himself, it's right that you don't know. This Arabic numeral was invented by ancient Indians in the fifth century AD and was not used in my country until the beginning of the 20th century. Now, it will take another three hundred years before the Indians invented these numbers. No one in the world knows them except themselves.

Since Indians have not yet invented these numbers, he naturally took it for himself without blushing. "Fengxiao, this is a set of numbers that I have newly produced for easy compilation of information." As he said that, he also wrote Chinese next to the Arabic numerals and explained to Guo Jia, "This is the text corresponding to the numbers."

Guo Jia stared at Han Zhan writing Arabic numerals and Chinese numerals for a long time, then nodded slowly and said, "The lord is so smart that he can come up with such exquisite numbers. In this way, it will be much more convenient to compile information."

Although Han Zhan made the Arabic numerals popular in later generations come out two hundred years in advance, when Guo Jia praised him, his face still felt a fever. He waved his hand at Guo Jia and said, "Fengxiao, you should start doing this immediately. If you need any manpower, the civil and military, soldiers, and money and food in Jizhou will be at your disposal."

"Subordinate the order." Guo Jia quickly replied: "Subordinate will go back and start doing this. Tomorrow, I will post a notice to recruit migrant workers to build high platforms in the city, mobilize money and grain, and prepare to start construction as soon as possible."

Looking at Guo Jia's departure, Han Zhan was quite proud. Since the past time travelers had not created this platform for thousands of miles of communication, his actions today will surely set a precedent for future time travelers, so that they could also learn from their own appearance in ancient times and create a series of communication platforms to facilitate information transmission in various places.

Who knew that not long after Guo Jia left, Ju Su hurried in from outside. He asked Han Zhan anxiously: "Lord, I heard that you plan to build a large-scale beacon tower in Jizhou. I wonder if this is the case?"

"Yes," Han Zhan did not want to inform the Gaotai, and it caused a lot of storm in the city too early, so he replied casually: "Although Yedu is not likely to be invaded by foreign enemies, the awareness of being prepared for danger in times of peace is still indispensable. Therefore, I ordered Fengxiao to build the Gaotai to prevent foreign enemies in the future, so as not to catch us off guard."

After understanding Han Zhan's purpose of cultivating the high platform, Ju Su volunteered: "If the lord does not abandon it, his subordinates are willing to assist the military advisors to build this beacon tower together."

Han Zhan was worried that Guo Jia would lack enough personnel to help when he was building a large-scale construction. At this moment, he heard Ju Su volunteering and someone would give him a pillow if he wanted to be asleep. Naturally, there was no reason not to agree: "Ju Jianjun, since you are willing to assist the military advisor and build the beacon tower outside the city, then Benhou appointed you as the deputy of the military advisor to jointly supervise the construction of the beacon tower."
Chapter completed!