Genius is just the threshold for me!

At 8:30 p.m., the streetlights illuminated the neighborhood.

Xia Tianqiang worked overtime all day and came home to find He Ying sitting on the sofa, looking at the two bags of unfinished sunflower seeds on the coffee table, her eyes red and silently blaming herself.

"What's wrong?"

Xia Tianqiang walked in and, seeing He Ying's state, asked anxiously, "What happened?"

"It's nothing."

He Ying looked up and saw her husband's figure. She sniffed and forced a smile, "I was just thinking that we've always been busy with work and haven't spent much time with Ranran during the most crucial years of her personality and psychological development. Was that wrong?"

"this……"

Xia Tianqiang paused, glanced back at Xia Ran's room where the door was already closed, and asked softly, "Did you have a fight with Ranran?"

"no."

He Ying raised her feet and placed them on the sofa, hugging her knees with her hands and gently shaking her head: "I was just thinking to myself."

"Why are you thinking about this? Is the logistics department too quiet?"

Xia Tianqiang sat down next to He Ying, looking at the sunflower seeds on the coffee table. If he remembered correctly, his daughter had never really liked eating sunflower seeds since she was little...

"What happened at the gathering today, Ranran's classmate?"

Xia Tianqiang seemed to have thought of something and asked, "Is it related to Chief Engineer Lin's son?"

"Nothing happened, just a minor incident."

He Ying leaned against Xia Tianqiang and briefly recounted the lunch distribution incident. Towards the end, her voice was filled with regret.

"I just don't know how to comfort or persuade your daughter... As I think about this, I realize that we were both too busy with work to pay attention to your daughter's upbringing."

"Isn't that just like you?"

Xia Tianqiang thought for a moment, then smiled and said, "Didn't you say before that you'd been watching me for years during middle school...?"

"How can that be the same? Back then, you were engrossed in studying, while I was the first one to set my sights on you."

He Ying replied, her expression suddenly becoming somewhat agitated: "But your daughter is the second one they've set their sights on, and they're even a childhood betrothal couple, they're very close..."

"What's done is done, there's no point in thinking about it."

Xia Tianqiang paused for a moment, then said seriously, "No matter what, don't interfere forcibly. Focus on guiding and persuading. We spent less time with Ranran when she was little, and now that she's grown up, forcibly interfering will only make things worse."

"I know……"

He Ying was silent for a moment: "So I was thinking, did we do something wrong before? If we had been there for her since she was little, your daughter's personality wouldn't be like this, and she wouldn't have been attracted to Chief Engineer Lin's son."

I observed them carefully during their two visits to our home.

"Of all these people, Chief Engineer Lin's son is indeed the most composed; the other students subconsciously listen to him..."

"Why don't you go talk to Ranran?"

Xia Tianqiang thought for a moment, then pointed to the closed door of Xia Ran's room: "No matter what, it's good that we can communicate. I can't say about this; only you and your daughter can talk to each other about it..."

"Then I'll go in and ask."

He Ying nodded, but as soon as she stood up, Xia Tian grabbed her wrist.

"Try to calm down, don't go in like this." Xia Tianqiang pointed to He Ying's still slightly red eyes.

"This kind of communication is more effective. I, as a mother, will cry in front of her. I don't believe she can fool me now..."

He Ying replied curtly, but still took a few deep breaths to compose herself and went to Xia Ran's room to knock on the door.

"Ranran, can Mommy come in?"

"Mom came in, the door wasn't locked..."

Xia Ran's response came from inside, but because the residential area had good soundproofing, it sounded very faint.

Hearing the voice, He Ying nodded to Xia Tianqiang, opened the door, and went inside.

"Mom, what's wrong?"

Xia Ran had taken a shower early and was curled up in bed reading a book, wearing a beige nightgown with a cartoon bear pattern. When He Ying came in and noticed that Xia Ran's eyes were a little red, she couldn't help but ask, "Why are your eyes red?"

"I was chopping two chili peppers and accidentally got some in my eyes..."

He Ying closed the door, sat down on the edge of the bed, looked at Xia Ran who had grown much taller than last year, and asked with a smile, "Do your clothes still fit? Shall we go shopping for new clothes together tomorrow?"

"No."

Xia Ran shook her head: "I left an extra size for the clothes I bought last time, and they still fit."

"Next time I'll buy the right size. If it's an extra size, it won't fit properly, it won't be comfortable, and it won't look good."

"I'll buy a well-fitting one for my underwear, but it doesn't matter what I wear on the outside. It'll save me some money too," Xia Ran answered readily.

"If you need to buy clothes, tell Mom, and we'll go shopping together."

He Ying smiled and naturally changed the subject: "I heard from Yueyue that you met with them last summer before school started?"

"I saw it at a game promotion event for swarm drones last year."

Xia Ran nodded, then seemed to remember something, looked up at He Ying seriously and said, "Mom, just say what you want to say. Don't try to trick me into telling you things like you did last year when you were going to Uncle Lin's to sign something. It was really annoying."

"..."

He Ying was taken aback for a moment, then gave a wry smile: "When did you find out?"

"I thought about it that night and figured it out."

Xia Ran didn't hide anything and said seriously, "I know you and Dad mean well, so I didn't take it to heart, but I don't want you to continue like this in the future."

"Okay, Mommy promises."

He Ying answered earnestly, and after finishing, she looked into her daughter's calm but seemingly star-studded eyes and asked softly, "So, you guessed why your mother came in?"

"I didn't expect that when I came in."

Xia Ran didn't dodge the question and answered directly, "But I guessed it when you asked me if I met Lin Dong and the others last summer."

"Will this tell Mom what you're thinking?"

He Ying reached out and touched Xia Ran's hair, saying gently, "Mom said that as long as you don't cross the line, your parents won't object to you having a boy you like... but it's very important whether that person is already with someone else."

This is not just a matter of our morality, but also a question of whether the other party is worth it.

If the other person is fickle, then they're not worth liking. But if they're not fickle, then you...

"Mom, liking someone doesn't necessarily mean you have to have a future. Qingling and Lindong are both my friends now, and I won't bother them."

Xia Ran smiled calmly: "Maybe I like it now, but when I grow up and my thoughts change, I won't like it anymore. You don't need to keep worrying about what I might do..."

Sigrún has taught at the Iceland University of the Arts as a part-time lecturer since and was Dean of the Department of Fine Art from -. In – she held a research position at Reykjavík Art Museum focusing on the role of women in Icelandic art. She studied fine art at the Icelandic College of Arts and Crafts and at Pratt Institute, New York, and holds BA and MA degrees in art history and philosophy from the University of Iceland. Sigrún lives and works in Iceland.

On the other side of the residential area, Lin Dong was unaware that he had once again become the center of attention.

After dinner, Comrade Lin Weiliang and Comrade Zhang Xiali went out for a walk. He stayed home alone and, as usual, turned on his computer to handle matters related to the J-16D project.

Although it is May Day, the project team has not stopped, and all the elite members have not rested.

"Xia Tianqiang, an email from Engineer Xia..."

Lin Dong called to confirm that Wang Xingguo was at home on standby and then logged into Wang Xingguo's chief engineer email.

The first email was sent by Xia Tianqiang at 8:15 pm, before he left work, detailing the problems he had encountered that day.

"All the pod designs have been technically solved and production has begun, but problems have arisen in coordinating the wingtip pods on both sides."

The coordination difference between the two sides is expected to exceed 2 microseconds... Is the coordination delay really that large?

Lin Dong frowned slightly and opened the test data that Xia Tianqiang had sent him.

Solving the electromagnetic interference between all the pods is a prerequisite for the viability of any electronic warfare aircraft design.

Therefore, the coordinated operation of the wingtip pods is the foundation for whether an electronic warfare aircraft can possess combat capabilities.

Because electronic warfare aircraft, whether it's the Growler or the J-16D, must employ a short baseline time difference method for wingtip pods. This method uses the time difference between the arrival of radar waves at the two wingtip pods to accurately calculate the direction and distance of the enemy's radar signal.

It's like a pair of ears, listening to the direction and location of the radar.

But radar waves are electromagnetic waves that travel at the speed of light.

To ensure that the short baseline time difference method can accurately measure the enemy radar position, the two wingtip pods must achieve nanosecond-level precision coordination.

With a baseline distance of 2 microseconds between the two wingtip pods of the J-16D, this means that in actual combat, the J-16D fighter jet's measurement of the enemy radar will be at least 500 meters off from hundreds of kilometers away.

This deviation distance is enough to determine that the J-16D lacks the foundation for actual combat.

After all, it can't even accurately lock onto enemy radar, and it can't use various anti-radiation destruction and electronic deception tactics. The entire electronic warfare aircraft is left with only the function of communication jamming, which makes it severely crippled.

"This engineer, Xia, worked on the KJ-500 project at Xi'an Aircraft Industry Corporation. It's a large-scale early warning aircraft that uses a multi-platform time difference method, emphasizing a large coverage area and multi-platform measurements. However, his research on the short baseline time difference method is not very in-depth..."

After carefully reviewing the data, Lin Dong understood why Xia Tianqiang was encountering difficulties in this area.

—Because there is no relevant experience.

The KJ-500, manufactured by Xi'an Aircraft Industry Group, is an early warning aircraft that uses a multi-platform time difference method to detect enemy radar targets. It leverages the powerful platform capabilities of the early warning aircraft to coordinate measurements with other aircraft, achieving multi-angle, wide-range collaborative positioning.

The advantage of this is extremely high positioning accuracy, with a calculation error of 0.1 meters or even lower. However, the disadvantage is that it has very poor flexibility, relatively slow combat response, and high requirements for platform performance and time calibration.

This is completely different from the short baseline time difference method used by the J-16D fighter jet, which relies on two wingtip electronic pods for measurement. Although the basic principle is the same, they are two completely different technologies.

"Yes, Engineer Xia still needs to practice..."

"This is the last major challenge for the J-16D. Once this challenge is resolved, the project will be completed."

Lin Dong muttered something to himself, then suspended Wang Xingguo's email and opened the military industry intranet to start scanning for relevant papers.

Because of the short baseline time difference method, this can only be studied by actually building the electronic pod and measuring the pod data, which he had not studied before.

Fortunately, it's not a core problem and doesn't involve optimizing the entire system. With some last-minute cramming and guidance from Xia Tianqiang, the problem shouldn't be too serious.