The preparation of special materials is a prerequisite for the success of the paramotor project, so Shen Yiyi personally undertook this most important premise. For this reason, after discussing with a few friends in the same project, she took care of her mind alone for several days. Fortunately, now through the phone, Luo Yufeng and Mr. Chen of the Shanghai Textile Research Institute were asked to finalize the details of the cooperation, and a stone in her heart finally landed.

After hanging up the phone, Shen Yiyi reported to the technical staff and management personnel in the factory that Luo Yufeng was about to come back, and sorted out the work plan before the holiday a little. Although she and Luo Yufeng registered another company, after all, this factory was contracted by Luo Yufeng, and it did not belong to her name, so she could only see if there were any major problems in some aspects. The specific management functions are not on her, and she has no authority to directly manage the factory.

Considering that before the fabric arrived at the factory, the hot-selling suit designed by himself must not be produced, and the recent time to restart production should also be after the Spring Festival, so although Shen Yiyi is a little regretful that the 100,000 yuan before the holiday cannot be accounted for, but thinking about it, it seems that there is no place to use money in a hurry now, so it doesn't matter.

When he returned home from Luo Yufeng's costume factory, he found an old man with gray hair and a young man wandering there at the gate of the camp. Shen Yiyi felt a little strange in his heart, outside the camp of this army, if someone was so wandering around and refused to leave, the sentry on duty should have carried out the expulsion a long time ago, why did they let these two people hang here all the time? It's too unalert.

When she got closer and looked at it, it suddenly dawned on her that it was Luo Yu who came. Wanted to come back to the last time this guy came. The sentry on duty remembered his face, so he knew that this person was a classmate of the children of the teacher's family. So although I didn't let him in, I didn't stop him either. Could the white-haired old man next to him be with him? The elders of his family? He must be an expert in aviation, right?

Shen Yi pondered in his heart as he walked forward. When the two of them noticed him closer, they immediately changed to a smiling face and greeted them: "Luo Yu, are you here?" Why did I make you do something so quickly? ”

Luo Yu was really happy when he saw Shen Yiyi coming. It's not about the subtle feelings between boys and girls. Since discovering that Shen Yiyi may be a rare object of discussion in the field of aviation interest, Shen Yiyi is no longer a girl in Luo Yu's heart, but a close friend, so the kind of thoughts that he may have had before have already flown out of the clouds at this time. He saw Shen Yiyi's excitement mainly because of this. I can't get in outside the camp, and it's so cold, so my grandfather shouldn't freeze when he's old; The second is that he and his grandfather at home finally used the formulas given by Shen Yiyi for a few days to calculate, and picked out a few low-speed and high-lift wings, and my grandfather also said that he had picked up these formulas, and he had already thought of Shen Yiyi to dig here to see if there were any new formulas or something that could be taken away.

Luo Yu also said loudly to Shen Yiyi: "Of course, what am I?" It doesn't take a week for you to do the work, I'll do it for you in three days. ”

"Really? Don't be perfunctory. I'm going to check. Shen Yiyi habitually hit each other one by one. Basically, she will subconsciously hit the other party if she is a little arrogant to anyone, just get used to it.

But her blow was useless to the confident Luo Yu. Luo Yu shook his head and said confidently, "You check." No problem guaranteed. ”

Shen Yi nodded with a smile, and at the same time smiled and greeted the old man beside Luo Yu. She walked up to the two of them and asked Luo Yu, "Luo Yu, you haven't introduced you yet." ...... is this old gentleman next to you? ”

Luo Yu suddenly remembered that he was too excited just now, and he didn't introduce his grandfather to Shen Yiyi for the first time, so he hurriedly said, "Cough." I forgot to introduce it just now. In this way, Shen Yiyi. This is my grandfather. ”

Shen Yiyi bowed to the old man: "Hello grandpa, I am Luo Yu's classmate." My name is Shen Yiyi. ”

Xiao Yizhan looked at the little girl in front of him interestingly. Although he is not young, the eyes of the older people are a little old, and they can see clearly when they are far away, but they can see blurry when they are close. When Shen Yiyi, the little girl, was still far away, he had already found the little girl walking in the distance. Although she was wrapped in a thick bloated cotton coat, her little face exposed was obviously a pretty little girl. As soon as he approached his grandson and greeted the other party, he guessed that this should be the little girl his grandson told him to give him a few formulas.

He also said to Shen Yiyi kindly: "Hello, classmate Shen Yiyi." I am Luo Yu's grandfather, and my name is Xiao Yizhan. I came to your house with Luo Yu today to sit down, and I found that the door of your house is still difficult to enter, haluha. ”

Hearing that the old man was joking with himself, Shen Yiyi also responded with a smile: "Where is it, if you want to come to Mr. Xiao, you should also work for Shen Fei, and everyone's safety and security measures are similar." If I hadn't made an appointment with you beforehand when I had visited your house, I would have waited outside the door for you to come home before letting me in. She greeted the sentry standing guard and helped the two visitors to register, while searching her mind for the name that the old man had just reported. Xiao Yizhan, Xiao Yizhan, it seems that he has a little impression in his mind, which big bull is coming?

When he saw the words that the old man had left on the visitor registration book, Shen Yiyi suddenly remembered, ah, it turned out to be this big bull. Xiao Yizhan is an old-timer in China's aviation industry. In my previous life, when I was writing a dissertation and piecing together some materials, when I was writing an introduction to domestic and foreign research, I had seen his name in many domestic papers and literature before the 90s. This old-timer has a lot of articles on airframe design, which are later required reading for students studying aviation.

Shen Yiyi was guessing in his heart that Luo Yu's grandfather, Xiao Yizhan, seemed to be the famous figure in the Chinese aviation industry, and while quietly smiling and walking towards his house with the two registered guests. Of course, as an outstanding student in the new era who stresses politeness and cultivates a new style, Shen Yiyi naturally began to have a polite conversation with the guests on the road.

Luo Yu is on the rise. He couldn't wait to share his experience with Shen Yiyi in the past three days, and before he arrived at Shen Yiyi's family, he began to introduce his hard work.

"Yiyi, you asked me last time to identify five alternative wing shapes. I used the formula you gave me to calculate it, and there are three wings that are very close to each other, so I chose all three wings together. So in a moment we'll give you the wing one with seven yo. ”

Shen Yiyi was startled when he heard that Luo Yu and they had found seven wings. She turned her head to look at Luo Yu, thinking to herself, why don't you just choose them all at once? Seven candidate airfoils, how long will it take to sift them out? I obviously told Luo Yu that I wanted to screen out the sub-optimal solution and the optimal solution in the first round, isn't this not yet a complete task? Of course, in front of other parents, Shen Yiyi restrained himself from asking this question immediately. It happened that there were residents in the compound greeting Shen Yiyi on the road, and she didn't respond to Luo Yu's question by greeting others.

Old Man Xiao looked at Shen Yiyi, the girl who didn't reply to his grandson's words, and guessed in his heart that the little girl seemed to be dissatisfied with his grandson's work status. As a person who participated in the whole process of Luo Yu's work, on the one hand, he wanted to help his grandson speak, and on the other hand, he also directly talked about the matter of the wing.

"Shen Yiyi, you don't have to feel that there are seven choices here, and the workload will be very large. You have to know that it is not easy for Luo Yu to pick out these seven things from the low-speed airfoil. And I calculated with him that with the formula you gave, the data of several airfoils are only different after five decimal places, so I asked him to choose all these airfoils to discuss. Because this means that the calculation results of these wings fall within the error range of the formula, they must be treated equally. ”

Shen Yi nodded a little and said, "Yes, I know the truth." Since you also feel that it is necessary to choose two more, it is definitely necessary. You're an expert in this area, and we're sure to take your advice. ”

At this time, the three of them had already arrived at the door of Shen Yiyi's house. At this time, there are still two hours before Shen's mother and them get off work. Master Shen was still not at home like last time, so Shen Yiyi took out the key, opened the door, and invited the two guests, an old man and a young guest, into the house.

When guests arrive at home, of course, please take a seat. Shen Yiyi also went to find this year's new tea from his father's private collection because of Xiao Lao's presence, and made tea and served it. The turquoise tea leaves spread out in the clear tea water, which is very tea-like.

Unlike Luo Yu's drinking cow chewing peonies when he picked it up, the old man Xiao Yizhan nodded secretly in his heart. The older generation pays attention to a self-cultivation and self-cultivation. When he was young, he was also born in a scholarly family, and the adults in the family also believed that tea could nourish nature, and that "treating people with tea" was the essence of "harmony" culture in Confucian culture. When I was young, I was busy with work, and the social environment at that time did not allow it, so I didn't have much time and mood to do these things. But as a person grows old and gets older, the bits and pieces of those memories seem so precious. The little girl noticed that she was an old man and brought out a good cup of tea, which was the "way" of hospitality taught by a tutored family. Just this cup of tea made Xiao Lao's good impression of Shen Yiyi establish at once. This is a good boy who is polite and knowledgeable. (To be continued......)

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