Du Yishan's connections really did not disappoint Chang Haonan.

In just one day, the latter received a call back.

"Xiao Chang, I have already helped you contact the heavy-duty die forging press you said, it is the design of Tsinghua University, but it is not in the 80s, the project was established in the 70s, it has been engaged in almost fifteen years, and it has won the second prize of scientific and technological progress, but then because of some technical obstacles and lack of funds, it was forced to dismount, and it should be the same project as you said?"

"It should be."

Chang Haonan instantly came to the spirit,

"Have you heard about the person who was in charge of the design of the die forging press in Qinghua back then?"

Jin Gui's previous knowledge of this matter also came from hearsay, and it is normal for some mistakes to occur in the middle, but as long as this project exists, it will be of great help to Chang Haonan's plan.

"Not really."

Du Yishan on the other side of the phone said with a slight smile in his tone,

"I directly contacted the deputy director of the National Machinery Committee that year, and was also the consultant of the First Machinery Department, Shen Hong, Shen Lao, Academician Shen"

Hearing this name, Chang Haonan almost blurted out a word of awesomeness.

Fortunately, in the end, I held back.

can make Du Yishan call Shen Lao, naturally it can't be a mortal.

Shen Hong.

Even if he is not in the same system as Chang Haonan, the latter has also heard of this name.

He only went to the fourth grade of primary school, served as the chief engineer of the Tea Workshop Arsenal during the Yan'an period, and became a self-taught legendary academician all the way.

In the 50s, he presided over the design of the first 10,000-ton hydraulic press in China, and has been engaged in the development and organization of mechanical engineering for a long time.

Of course, Shen Lao should be in his 90s now, and he must have left the front-line post a long time ago.

However, such a titan-level person, even if he retires, his connections can still maintain a considerable part.

What's more, the 68,000-ton die forging press was established during his tenure as deputy director of the Machinery Committee.

"Academician Shen is checking his body in the hospital for the past two days, so don't bother, he said that he can come to his house next Monday, and then he will call the people who were in charge of several more important sub-projects at that time."

Good guys, this is the influence of senior academicians.

Straight to a family photo.

"Okay, your help this time is too timely."

Chang Haonan thanked him, exchanged pleasantries with Du Yishan for a while, and then hung up the phone.

……

Three days later, Chang Haonan deliberately brought some gifts and went to the address given by Du Yishan before.

An ordinary apartment building.

Around the end of the 80s, the first batch of new-style buildings built in Beijing are now a bit old.

It's certainly not a fancy residence.

However, it is not as slumbered as some reports like to render.

It's just plain and ordinary.

If it weren't for the special location, probably no one would have thought that many famous academicians would live here.

Ringing the doorbell, the door was opened by a young woman who looked to be about 30 years old.

"You are ......"

After seeing such a young, even student-looking person standing at the door, she even subconsciously poked her head out to look out.

It turned out that there was no one else behind Chang Haonan.

"Who are you?"

Although this community is ordinary on the surface, the security is still in place, and there is definitely no way for idle people to come in casually, so she didn't think about any harm.

"I'm Chang Haonan, I've contacted Shen Lao before, and I'm going to visit him today."

"Uh...... You are ......"

The woman was obviously a little surprised by this answer, she didn't immediately let Chang Haonan into the house, but turned around and shouted inside:

"Grandpa, there is a guest named Chang Haonan at the door looking for you......"

Obviously, this should be Shen Hong's granddaughter.

Immediately after that, a man who looked to be in his fifties came out of the house, and when he saw Chang Haonan at the door, he walked forward quickly:

"This is Comrade Xiao Chang, I've heard Shen Lao talk about you before, Academician Du's senior disciple, a closed disciple, please come in ......"

Chang Haonan handed the fruit basket, snacks and drinks in his hand to the woman who had just opened the door.

The other party expressed his apologies slightly cramped while receiving it:

"I'm sorry...... I just heard from my grandfather that the person who came here is an expert in the 973 project, and I thought you should be a professor about the same age as my father......"

"My name is Shen Yiqing, I am Shen Hong's granddaughter, and I am not engaged in scientific research, so I may not know much about you......"

Chang Haonan remained silent:

"It's okay, I'm used to it......"

Since his rebirth, there are many people who have been shocked by his age, and Shen Yiqing will not be the first, nor will he be the last.

After all, it's not a big misunderstanding, and it's human nature to not let strangers enter the door, so after a few simple explanations, this matter is over.

As for the person who came out of the back room, his name was Yan Yongnian, a professor at Qinghua University.

It was one of the main designers of the 68,000-ton heavy-duty die forging press that year.

Under his leadership, Chang Haonan walked through the middle of two tall piles of newspapers and walked into the innermost bedroom.

"Elder Shen, it's an honor to visit you at home."

Chang Haonan shook the old academician's hand, which was almost dry.

After two days of free work, Chang Haonan specially looked at the information and determined that Shen Lao was 91 years old this year, although his spirit was acceptable, his body was indeed relatively weak.

Before entering the house just now, Shen Yiqing also instructed that the time for talking should not exceed an hour.

Therefore, Chang Haonan directly made a long story short, and told the idea that he was ready to re-launch the research and development of heavy-duty die forging presses on the basis of existing achievements, as well as the current demand for die forging presses in the domestic manufacturing industry, especially in the aviation manufacturing industry.

As a result, Shen Hong's eyes, which were still a little trembling with his hands on crutches, suddenly lit up.

As soon as he mentioned the die forging press, he seemed to be twenty years younger in an instant.

"In fact, the reason why this hydraulic press couldn't go on back then was mainly because there were a few places where it encountered great difficulties, or it walked into a dead end, and it failed to make a breakthrough for several years, and the superiors gradually lost confidence......

After picking up the cup and taking a sip of water, he slowly and leisurely began to introduce Chang Haonan:

"At that time, we still made some achievements in hydraulics, electrical and control equipment, but in the end, we were mainly stuck in three places."

"First, the domestic research on the ontology structure is not thorough enough, empirically speaking, the most suitable frame for the super-heavy hydraulic press should be a combination of plates and frames, 45,000 tons in the United States, The two 75,000 tons of the Soviet Union, as well as the 65,000 tons exported by the Soviet Union to France, are all of this structure, but the requirements for structural calculation are very high, we can only retreat to the second, using the prestressed steel wire winding structure, although theoretically it can also do about 60,000 tons, but the stress distribution of the steel wire winding layer is uneven, the reliability is very poor, especially we can not make good enough steel wire materials, it is even worse......"

"The second is that the research on equipment vibration is not thorough enough, and we found this problem in the pilot test, but we have never been able to completely solve it."

"The third is hydraulic oil, and there is no hydraulic oil ...... that meets the requirements in China at that time."

"It took a lot of time and money to solve these problems, but by then I had stepped down from my position, and the wind was changing from above, and finally it was ......"

Although the speech was a little stumbling, and even needed to be said for a while, and a lot of explanations by Professor Yan Yongnian were inserted during the period, the old academician was definitely a treasure for these technical issues.

When it came to the end, his emotions even became a little excited.

Shen Yiqing, who had been paying attention to the situation at the door, hurriedly came in and calmed him down for a while.

After sending his granddaughter away, Shen Hong, who was obviously a little tired, raised his head and looked at Chang Haonan who was sitting on the chair next to him.

It is as if I have seen a child who likes a toy but doesn't know if I can buy it.

"Now, you have been able to solve these problems? And also...... 68,000 tons of hydraulic press, can it really be approved? ”

Brothers continue to ask for a wave of monthly passes!

(End of chapter)