"Is this a navigation system?" Mr. Li's eyes fell on the walker. The computing aspect involved is quite extensive, and the navigation chip is one of them.

"Teacher, this walker seems to be the same as the design drawings sent by the Tang family. Did you buy it from the Tang family?" The girl behind Mr. Li asked.

Hearing the Tang family, Yu Chong involuntarily tightened his back, and before Aunt Yu Zeng opened his mouth, he hurriedly said, "Yes, I bought it from the Tang family."

Grandpa Yu Zeng was old and could not hear.

Aunt Yu Zeng looked at this younger generation in surprise, not knowing why he was lying. Mr.

Li then turned his eyes to them. They looked familiar, but he didn't know them.

The female student introduced, "Teacher, these are the two masters of intangible inheritance of traditional musical instruments, Master Yu."

Mr. Li's eyes immediately warmed up, and his tone was cordial: "I have heard that Mr. Yu has a set of ancient chimes that are still well preserved." There is a national treasure in the traditional musical instrument world who is already 108 years old. He is talking about this old man in front of him, who is several decades older than himself.

Yu Chong was a little happy and cautious: "I didn't expect that you, Mr. Li, knew this."

Grandpa Yu Zeng reacted a few beats slower. After knowing what Mr. Li said, he couldn't help but say seriously, "I have also heard that Mr. Li's newly developed automatic electronic technology has greatly promoted the efficiency of our country's current business economy."

The young are formidable.

For a man like Yu Zeng, the greatest joy is to see China making progress. He pointed at Yu Zeng's grandmother, "If you are free, Mr. Li, you can come to listen to my sister's concert." Mr. Li

nodded, "If you are free."

After a brief exchange of greetings, the two separated and went to the floor of the hotel where they were staying.

Yu Zeng's grandmother suddenly spoke, "Xiao Chong, why did you lie just now?"

Yu Chong said righteously, "Aunt, didn't you hear that this walker is very similar to the Tang family's... Maybe that Qin Hongfei saw the Tang family's walker somewhere and copied it. I did it for my cousin's sake."

Yu Zeng's grandmother was also confused for a moment, "Maybe Mr. Li's people just made a mistake." Walkers are actually all the same. Yu

Chong said speechlessly, "Just in case."

The old man's ears were not working well, so he didn't hear the two people's argument, but he wanted to go out for a walk.

On the other side...

Mr. Li took his students back to his residence in Central City. The student assistant happened to be holding a teapot and said, "Teacher, Teacher Tan is here to visit."

The two researchers of the Tang family, one in his early thirties and the other in his fifties, the latter's hair was already gray, and he was also quite famous in the scientific research community, but at this moment in front of Mr. Li, they still had to be polite and respectful, and their tone was also a little hurried: "Mr. Li, I came to bother you today because I want you to see something."

Mr. Li: "Sit down."

The two sat down again, and without hesitation, they took out something directly.

A small chip! It was not big, about the size of an MP3 player. Mr. Li was a little confused. "This..."

The man surnamed Tan took it out impatiently. "This is a navigation chip. It contains maps of 24 cities in China. This is the most critical thing for the walker that Tang wants to promote this time. But when I was testing it, I found that there was something in the circuit of this chip that I couldn't understand. I don't know what it is."

Tang was very cautious.

The man surnamed Tan adjusted his glasses. He was afraid that it was a counter-monitor or something like that.

Mr. Li was an expert. After listening to him, he knew what he was talking about. "The main system."

The man surnamed Tan was confused. "The main system?"

Mr. Li nodded and stretched out his hand. The man immediately handed the chip to him. Mr. Li raised his hand, and the female assistant immediately took his computer.

Mr. Li was typing away on the computer without slowness, and finally a distribution diagram came out. The two people opposite him subconsciously raised their buttocks and moved closer to the screen to look at it. "The main system is used to monitor the subsystem, and at the same time, it is convenient for the person in charge of the main system to update the data at the same time." As he

said, he inserted the chip into a converter and connected it to the computer. After entering the page, he paused, "Your this should be a subsystem..."

The man surnamed Tan has made achievements in scientific research, especially in medical fields.

But these...

He smiled awkwardly.

Mr. Li sighed, "Didn't you say that there are only 24 city maps? Because the main system is not perfect enough, the maps of other cities of different sizes will be loaded in later..." He paused, and suddenly realized what he was talking about.

Later, the map will be loaded, later.

"Do you have samples of this walker?"

"Yes, yes. I just brought it here so that you, Mr. Li, can help me study the market." The man surnamed Tan is also very famous in the electronics field, but he is very respectful to Mr. Li. He didn't know how to ask Mr. Li to see it just now. After all, according to the market, this thing is for people of Mr. Li's age, but it might be offensive to say so. I didn't expect him to ask it himself. That's great.

Qin Hongfei had already sent the sample of the walker through the Internet. Tang's side has made about ten samples.

The chip arrived today. This thing looks simple, but it is difficult for him to produce it in large quantities. That's why he came to ask Mr. Li for advice.

After bringing the walker in, Mr. Li took a look at it and asked, "Has your Tang's already sold it to the outside world?" It was exactly the same as the walker he saw in the hotel.

The man surnamed Tan shook his head and said, "No, how could it be possible that the chip just arrived today." Mr.

Li said calmly, "Today I was in the hotel and saw the old man of the Yu family using this walker."

The man surnamed Tan said, "Oh, maybe Miss Zhou Yuner just happened to know someone from the Yu family?"

Mr. Li nodded and stopped asking. The walker was actually no different from an ordinary walker, but there were three buttons and a small hole for inserting the chip. Mr. Li He tried to connect the chip in. It was not enough to just put it in. The circuit needed to be connected. Only after that was done, it was perfect. He tried to distinguish the three buttons. When the navigation sound came, he couldn't help but frown and asked, "You said... this walker was made by Zhou Yun'er?"

Zhou Yun'er knew that Ms. Tang had been secretly supporting college students for a long time. These college students would work for the Tang family when they were old enough. Zhou Yun'er

was one of them. She had made achievements in medical machinery in the early years. The gap between medical machinery and electronic machinery was not big. It could be considered a leap, which was amazing.

First it was the monitor, then the walker.