In the following two or three days, Lin Zhenhua and his entourage went to the Ministry of Foreign Trade, the State Economic Commission, the State Development Planning Commission, and other units, and even visited He Haifeng in a private capacity. The attitude of all units towards the Xiya tribe project is similar, believing that the project is a good project, but the place is too inappropriate, and the project should be postponed regardless of political or security considerations.

The people in the ministry and commission are naturally more official than honest about Lin Zhenhua and others, probably from the perspective of internationalism, the Third World, and other major principles. He Haifeng is relatively much more realistic, he reminded Lin Zhenhua that this project is too risky, and if there is a mistake, it will affect his Lin Zhenhua's future, so it is better to be cautious. However, He Haifeng also admitted that if this project can be completed, it will be very beneficial for Chinese enterprises to enter the African market.

After a few days of activities in Beijing, there was no result. Chen Tian replied with a letter, saying that he had already reported the matter to his father, and the old man promised to find an opportunity to mention it to the relevant leaders, but this opportunity needed to wait, so it was better for Lin Zhenhua and them to go back to Xunyang first to do their own business.

The day before leaving, Lin Zhenhua arranged for everyone to have their own activities, and he wanted to stay in the guest house and sleep well. Wei Dongqi went around the shopping mall next to the guest house, bought a lot of pastries, supplements, and so on, and then began to change clothes and brush shoes, as if he was going to visit some relatives and friends.

"Lao Wei, what's the matter, there are relatives in Beijing?" Lin Zhenhua asked casually while lying on the bed.

Wei Dongqi shook his head and said, "No, an old engineer I met when I walked over hasn't seen him for more than ten years, and I don't know if he's still there." ”

"Are you very old?" Lin Zhenhua asked.

Wei Dongqi counted with his fingers and said, "It should be almost 70, he was almost 60 years old back then, and the old man was not in good health." ”

"What does he do? 、,

"Engaged in oil refining equipment, by the way, Manager Lin, he is worthy of my teacher in terms of technology and experience of our 110,000-ton ethylene research team. When we worked together, he was very nice to me and treated me like his junior. Wei Dongqi said with a somewhat nostalgic look.

"Oh, is that so?" Lin Zhenhua suddenly came to his senses when he heard that he was engaged in oil refining equipment, he jumped down from the bed and said, "Let's go, Lao Wei, let's go and have a look." ”

Wei Dongqi hesitated: "Manager Lin, I don't know if he is still alive now, and when we separated, he only left a home address for me, which has been more than 10 years, and I don't know if he still lives there. ”

Lin Zhenhua said disapprerovingly: "Fight the air, just hit the air, anyway, there is nothing to do today, and you should go to Beijing City." Just right, I'll drive you. ”

In order to facilitate the activities of Lin Zhenhua and others, Chen Tian left a jeep for Lin Zhenhua. Among the three of them, Lin Zhenhua and Xiang Zhe can drive, and they both got their driver's licenses in Xunyang. At that time, there were not many cars on the road in Beijing, and it was convenient to park, and it was indeed much more convenient to have a car at hand.

Wei Dongqi knew Lin Zhenhua's temper, so he didn't shirk it. Lin Zhenhua helped Wei Dongqi hold a large bag of gifts, put them on the back seat of the jeep, and then personally drove Wei Dongqi to a workers' dormitory in the southeast corner of Beijing.

On the way, Wei Dongqi gave Lin Zhenhua a detailed description of the old engineer he was going to see. The old man's name is He Chengshan, an engineer in a chemical equipment company in Beijing, specializing in cryogenic equipment manufacturing. More than 10 years ago, the State Development Planning Commission organized 110,000 tons of ethylene technology research, and a technical group led by He Chengshan was responsible for the research and development of ethylene compressors and propylene compressors.

A set of ethylene cracking plant includes more than 300 sets of equipment, the core and the most technically difficult of which is the so-called "ethylene three machines", namely pyrolysis gas compressor, ethylene compressor and propylene compressor. Among these three machines, the inlet temperature of the propylene compressor is minus 40 degrees Celsius, and the inlet temperature of the ethylene compressor is minus 102 degrees Celsius, which belongs to the low-temperature compressor.

At low temperatures, the mechanical properties of various materials change. Metal, which is incredibly hard at room temperature, can be as fragile as particleboard at low temperatures. The compressor is a device that works under high pressure conditions, and the toughness requirements for the material are very high. Because of this, the material selection, structural design, and manufacturing process of cryogenic compressors are all technical problems in the world. In the tackling of key problems more than ten years ago, the project team ultimately failed to solve these technical problems, resulting in the collapse of the entire project. After the project failed, the technicians of the research team returned to their respective work units, and Wei Dongqi has not seen He Chengshan since then.

"Master, please inquire, how is this address......

Neither Lin Zhenhua nor Wei Dongqi had ever been to this place, called "Shuangjing", which Lin Zhenhua had barely heard of in his previous life, but that was only to know that it was the name of a station on the subway line. In desperation, the two of them had to drive forward again, while poking their heads out of the window to ask passers-by.

"Shuangjing Nanli, oh, I know, that's the family home of the No. 5 Chemical Plant, right?" The two of you hit this all the way to the south, and then ran east when you saw a water tower, about 500 meters ahead, there were two chimneys, and you walked under the second chimney, there was an alley, and then south along the alley ......" The enthusiastic old man of the capital even said and gestured, and before he finished speaking, Wei Dongqi was already dizzy.

After walking through countless water towers and smoke white, Lin Zhenhua and Wei Dongqi finally found the neighborhood on the address, which is a community composed of more than a dozen six-story unit buildings built in the 50s, and the community is planted with tall poplar trees, which shade the sky and the sun, and looks very shady in the prosperous afternoon.

"Comrade, who are you looking for? ｎ

At the gate of the community, an old lady with small feet came forward vigilantly, stopped the jeep, looked at the two people in the car and asked, her old man was wearing a red armband on his arm, looking like a Red Guard.

"Building 17, Gate 3, 402, He Chengshan." Wei Dongqi showed the address slip to the old lady with little feet, and said at the same time: "Auntie, please ask, does this old gentleman still live here?" ”

"What do you have to do with him? Is there something to do with him? The old lady asked very devotedly.

Wei Dongqi said: "I'm his colleague, come and see him." ”

"Colleague? Where are you and his colleague? ”

"Do... We have done technical research together in the past, and Mr. He is my teacher. By the way, I am from Jiangnan Hanhua Heavy Industry Group, and this is my work card. Wei Dongqi took out his work card and handed it to the old lady.

The old lady looked at the work card seriously, and then nodded and said, "Oh, you are still the director, then you can go in." Who's that, you're the driver, you park the car under the tree over there. Her last sentence was to Lin Zhenhua.

"He's not a driver, he's a ......," Wei Dongqi hurriedly planned to explain.

"Hehe, I'm the driver." Lin Zhenhua grinned. Judging from their ages, it is most reasonable to say that Lin Zhenhua is Wei Dongqi's driver. If Lin Zhenhua is Wei Dongqi's superior, it is estimated that the old lady will immediately call the police, thinking that these two people must be liars. The simplest proof is: in this world, how can there be a deputy general manager who can drive?

"Auntie, will He Lao be at home at this time?" Wei Dongqi asked.

"You go to his house and look for him, and every day at this time, he's downstairs teaching a bunch of kids. You see, there's no over there, he's the one who teaches the kids there. The old lady pointed to a shade of trees in the community.

"Class? What classes are taken? ”

Lin Zhenhua and Wei Dongqi thanked the old lady with suspicion, and walked in the direction of the shade. When I walked up, I saw more than a dozen half-grown children sitting in the shade of a tree, listening attentively to the lecture.

On the tree in front of them, there was a blackboard that seemed to have been made of black paint painted on the bed board, and an old man was writing chemical equations on the blackboard, explaining as he wrote:

"The reaction between sodium bicarbonate and hydrochloric acid is an exothermic reaction to produce sodium chloride, carbon dioxide and...

Lin Zhenhua and Wei Dongqi stopped, not daring to disturb the old gentleman's class. Wei Dongqi whispered to Lin Zhenhua: "This old gentleman is He Lao, it seems that he is much older than more than ten years ago. ”

Lin Zhenhua looked at He Chengshan and saw that he was about one meter and seven years tall, and his body was thin and weak, like a bamboo pole. His hair was completely white, and his eyes seemed to have some cataracts, and he couldn't see much brilliance. Due to the week

There were more than a dozen students around, and it was outside to give a lecture, so he tried his best to raise his voice, but after all, he was not full of breath, and often after saying a few words, his voice weakened, and he had to stop to catch his breath before continuing. , "He Lao is really an old man, with thousands of miles of ambition, it is not easy to make up lessons for children at such an old age." Lin Zhenhua said with emotion.

Wei Dongqi said: "He has always been so enthusiastic. In the past, when we were working together on key problems, he often lectured us young people, but at that time he had a very loud voice. ”

"I'll tell you about sodium ammonia carbonate too?" Lin Zhenhua asked curiously.

Wei Dongqi said with a smile: "Of course this is impossible, he told us about the fracture toughness of the material, and how to use the indentation method and the unilateral incision beam method to measure the fracture toughness of the material." ”

"It's physics, isn't it?" Lin Zhenhua said. As a graduate student in the Department of Mechanical Engineering, he is relatively familiar with fracture toughness, at least he knows that this thing is different from sodium bicarbonate.

"The old gentleman is learning machinery, but he must know this kind of middle school chemistry, probably because he wants to give full play to his spare heat and help the children in the community make up for the lessons." Wei Dongqi guessed.

The two of them talked in a whisper, and He Chengshan's class had already been finished. The students suddenly stood up, packed up their stationery, said goodbye to He Chengshan, and left after a while. from

An old lady came out of the doorway on the side and began to help He Chengshan clean up the small stools that the students were sitting on and stack them aside. The old lady and He Chengshan's sword cooperate tacitly, and it is estimated that she should be He Chengshan's wife.

Seeing this, Wei Dongqi and Lin Zhenhua hurriedly stepped forward to help. Lin Zhenhua said: "Old He, aunt, you can leave it alone, I'll help you clean it up." ”

"Oh, it's okay, it's okay, it's not troublesome." He Chengshan said casually, he looked up at Lin Zhenhua and the others, and when he saw that it was someone he didn't know, he couldn't help but feel a little strange: "You two are ...... How do you know me? ,,

Wei Dongqi smiled and said, "Old He, don't you remember me?" I'm Xiao Wei. ”

"Xiao Wei?" He Chengshan knocked his head with his hand, as if he was recalling the origin of this Xiao Wei.

"I am from Jiangnan Provincial Petrochemical Machinery Factory, and when I was working with you when 110,000 tons of ethylene were tackling, do you remember?" Wei Dongqi reminded.

"Oh, Xiao Wei" As soon as he mentioned "10,000 tons of ethylene", He Chengshan's memory was evoked, and he grabbed Wei Dongqi's hand and coughed excitedly: "Oh, it turned out to be Xiao Wei." Let me think about it, your name is Wei ...... Wei Dongqi, right? ”

"That's right, Old He, you have a really good memory." Wei Dongqi said happily that although he was a relatively hard-working young man back then, his position was not as good as that of an old engineer like He Chengshan. He Chengshan was able to remember his name, which touched him very much.

"Remember, remember." He Chengshan held Wei Dongqi's hand and didn't let go, with a sincere smile on his face, "I still hang it at home when we took a group photo back then, just take a look at it if it's okay." I remember all of you. What, Xiao Wei, are you here for a business trip to Beijing? If the place is inconvenient, it is okay to squeeze in my house. ”

The sentence "squeeze" suddenly made Wei Dongqi get back to the feeling of the year. Although they only worked together for a short time and didn't see each other for more than ten years afterwards, He Chengshan didn't seem to have any sense of life for Wei Dongqi, and as soon as they met, he seriously thought about helping Wei Dongqi save business trip expenses.

"Old He, don't bother, I've already stayed in the guest house, and I'm here to see you today.

, Wei Dongqi said.

At this time, Lin Zhenhua had already helped Mrs. He stack the stool and other things under the tree, and covered it with a tarpaulin. After freeing his hand, he walked over and brought all the gifts bought by Wei Dongqi and said to He Chengshan with a smile: "Mr. He, I am a colleague of Director Wei, and I am here to accompany Director Wei to visit you today." ”

"Oh, you're here, why are you still bringing things. How much does it cost? He Chengshan looked at the gifts and said uneasily. He noticed the title Lin Zhenhua used when he called Wei Dongqi, and couldn't help frowning and asked, "Xiao Wei, you are now the director?" These things are not bought with public funds, are they? ”

"No, Mr. He, don't worry, this is definitely not public money." Wei Dongqi said with a smile.

"Then you shouldn't buy it, how much money can you earn as a director?" He Chengshan complained, "It's okay if you come, you can take these gifts back and ask the store if they can be returned." ”

Wei Dongqi couldn't cry or laugh: "Old He, let's talk about this later." Why don't we go to the house and talk? "Yes, yes, you see I'm confused, let's go, talk at home, by the way, you all eat at my house at night." He Chengshan came to his senses at this time, and he was still standing in the community chatting with the guests.

The group walked towards the unit where He Chengshan lived, Wei Dongqi and He Chengshan walked together, and asked as they walked, "Old He, how are you doing now?" ”

"It's not good, people are old, like machines are old, the materials are tired, and there are many problems. I have a little heart problem, and I have asthma in winter, and sometimes I can't sleep night after night. He Chengshan said.

Wei Dongqi said: "Since you are not in good health, why do you still give lectures to the children in the community?" This kind of extracurricular counselor, can't the community find young people to do it? ”

He Chengshan was stunned for a moment, he wanted to say something, but he couldn't say it. Just as he was struggling, one by one the students who had just left ran back, ran to He Chengshan, and said, "Teacher He, I forgot to tell you one thing just now. ”

"What's the matter?" He Chengshan asked.

"My mother asked me to tell you that my brother was sick and needed some money, and she asked me to ask, can I pay you two days late for my make-up fee?" The student said.

"Make-up fees?" Wei Dongqi looked at He Chengshan and was stunned...... Started sitting in the morning

I prepared the code words in front of the computer, but it took a day to check the information of the ethylene device, and I didn't start writing until the evening, so I delayed the update, forgive me. After sending this chapter, I'll continue to code the next chapter, and it is estimated that it will be updated until midnight

Let's get up tomorrow morning and watch again. Before going to bed, flip through the extra monthly passes and vote for a few. My deputy moderator told me in a hurry that the monthly ticket for this book had dropped to 50 people, and he was calling for it

's bet is going to be lost.