When Jiang Nan was resting in the room at the construction site in the afternoon, Bai Dequn was not idle either. He took the construction site car and drove around.

When he came back in the evening, Bai Dequn had selected seven or eight specific locations for Jiangnan. It must be said that this middle-aged uncle was quite reliable in his work.

After dinner, Bai Dequn took Jiang Nan to have a look around. Jiang Nan was very satisfied with the location.

It's just that not all of these seven or eight plots may still be there. It will take months to find out exactly how it will be after we send people over again to contact the government. Then we will select 5 plots from them.

Things in Jinling were handled a bit sloppily, but that was the only way it could be done.

After sending Badqun back to the construction site, Jiang Nan and Mi Lan directly found a hotel to stay.

When the matter reached this level, Jiang Nan naturally had to call Hua Lianyue to explain the situation.

Hua Lianyue was very surprised to learn that Jiang Nan had finished the matter so quickly. She said on the phone: "The matter was done quite quickly. Will you come back tomorrow?"

Jiang Nan said: "I want to go find Chen Yu tomorrow. I have something I want her to help with. You can ask Jin Beibei to call me later and give me Chen Yu's number."

Hua Lianyue didn't ask any more questions, but said: "Jiangnan, I heard Uncle Jiang say that the Design Institute of Tongzhou University has finished contacting them. You can go over and communicate with them next Monday. After communicating about the SOHO project, I think you can also

It’s time to set off, Guangnan Okang and Hanchang Jiangnan Town both need you to go there.”

Jiang Nan said: "That's it. When I pass by Suzhou tomorrow, I will take a look at the Dayue City project in Gusu, and then return to the Magic City."

Hua Lianyue said with emotion: "It is really tiring to carry out construction everywhere. You should pay attention to rest outside and pay attention to food hygiene."

After hanging up the phone, Jiang Nan quickly received a call from Jin Beibei, and Jiang Nan got Chen Yu's phone number from Jin Beibei.

Saturday, August 12th.

Early in the morning, Jiang Nan asked Mi Lan to take him to Pukou. At the gate of Jinling University's Pukou campus, Jiang Nan met Chen Yu.

I haven't seen him for more than a year, and Chen Yu is actually a bit paler. Maybe it's because of her age change, but she's still as thin as ever.

However, Chen Yu's character has not changed. He is as straightforward as ever, but unlike Yin Shutong's straightforwardness, Chen Yu does not have so many thoughts about life in his mind.

Seeing Jiang Nan, Chen Yu greeted him warmly: "Jiang Nan, I didn't expect you to really come to Jinling. I couldn't believe it when Jin Beibei called me yesterday."

Jiang Nan said: "I came to Jinling to do some errands. I arrived yesterday. I live over there at the Drum Tower. Chen Yu, the sun in Jinling is so harsh. I didn't expect you to be a little fairer."

Chen Yu thought for a moment and then said: "It may be that the latitude of Jinling is higher than our Xiaochuan, the direct point of the sun is lower, and the radiation received per unit area is smaller."

Jiang Nan was completely speechless. Did he become stupid by studying mathematics? He felt like he was not in the same dimension as her.

Jiang Nan said: "Chen Yu, I have asked Jin Beibei to tell the store manager that I will lend you a few hours. I have something to tell you. Let's talk while walking."

Chen Yu nodded and said: "Last night, Jin Beibei told me that you had something to ask me for help. Is there anything I can do to help you?"

Jiang Nan smiled and said: "Actually, I want to ask you to help me with a math problem, related to discrete mathematics."

Chen Yu was stunned after hearing this. It took him a long time to react and asked: "Jiangnan, what kind of complicated question can't even be answered by your Qingbei students? I'm just a freshman, I don't know if I can answer it for you."

."

Jiang Nan waved his hand and said: "The question is not complicated, but it may take a long time. You don't have to worry about solving it immediately. Just wait until you finish it before you graduate."

Chen Yu frowned and said, "What topic takes so long?"

Jiang Nan smiled and said: "Route planning."

Chen Yu's frown deepened. The route planning problem was not complicated, but it shouldn't take so long.

Jiangnan no longer talked about it and said directly: "That's it. There are more than 270 prefecture-level cities and more than 2,000 counties in the country. Excluding the border areas, Tibet, and Inner Mongolia, there are three places that don't have to be considered. I hope you can help me plan a whole

line system, divide all remaining areas into several central regions, and connect them with the shortest first-level network. It is best to choose a city at the provincial capital level for the central region. This is the first important step.

It is required that there be as few central regions as possible and first-level lines as short as possible. Secondly, all prefecture-level cities are divided into two levels around the central regions, and a second-level central area is established, between the first-level central area and the second-level central area.

, it is also planned using the shortest route. The secondary central area should be as small as possible, and the secondary route should be as short as possible. The next step is the county level of the third level. The requirements are the same as those of the first and second levels. Can you understand the concept I am talking about?"

Chen Yu nodded thoughtfully and said, "Wow, your math problem does take several years."

Jiang Nan said: "If you can't finish this problem, you can form a team. I can provide you with the scientific research expenses of forming a team and provide everyone with remuneration. This matter is very important to me. I hope you can solve it before graduation in 2003."

, and another thing is that line planning must consider different geographical factors such as topography and rivers. It cannot be considered as all straight lines, but it must also be a smooth curve, and the minimum radius of the curve cannot be less than 10,000 meters, so this work is very heavy."

Chen Yu thought for a while and said: "Don't rush to form a team. Let me study it carefully first. We will start this course on discrete mathematics next. But I have also read the textbook before. This is a graph theory problem. Jiangnan, I

I must make it for you before graduation in 2003."

Jiang Nan looked at Chen Yu who looked serious, handed her an envelope, and said: "Chen Yu, I hope it won't delay your normal study, nor your future postgraduate entrance examinations or other plans. In short, if you are too busy, form a team."

, we pay others and are not afraid of spending money. Here is 20,000 yuan for you to buy a laptop with better performance. You can use b to solve this problem."

Chen Yu looked at the envelope in his hand with a puzzled look and said, "This is not necessary in Jiangnan. Our profession has its own computer room, so there is no need to waste this money."

Jiang Nan solemnly said: "Chen Yu, I can't find a suitable person to help me solve this problem. I can only ask you for help, because you are the most accomplished person in mathematics among the people I know, and I ask you to solve this problem."

The matter about the problem must be kept confidential, and do not tell anyone that I asked you to solve the problem. Just say that it is purely your own interest."

Because this matter is so important, it is easy to cause a sensation, especially on university campuses, but if Chen Yu studies the mathematical model by himself, it will be different.

Listening to Jiang Nan's solemn words, Chen Yu also replied seriously: "Don't worry, I won't tell anyone Jiang Nan is talking to."

Jiang Nan added: "Don't do your part-time job. I will pay you a salary of 2,000 yuan every month. When this problem is solved, I will pay you an additional 100,000 yuan. If you have any other requirements during the process,

You can mention it to me."

Hearing Jiang Nan talk about money, Chen Yu also asked seriously: "Jiang Nan, you don't want to help me, so you use this method?"

Jiang Nan shook his head and said: "Absolutely not. This matter is really important to me, so you must solve this problem seriously. You will know in the future that I am not lying to you today. I am not helping you.

But you are helping me."

Chen Yu heard this and said: "Jiangnan, if this is the case, then I will quit my part-time job. You don't have to give me 2,000 per month. In the future, when the problem is solved, you don't have to give me 100,000. You can give me 300 per month."

That’s enough, I work part-time in Jiangnan Huayue, and the most I can earn is this much every month.”

Jiang Nan shook his head and said: "That's it for money matters. 2,000 per month. Solving problems requires your brain. Pay more attention to your nutrition. Also, I don't want you to be distracted by money matters, so you just have to concentrate on solving problems."
Chapter completed!