Genius is just the threshold for me!

Chapter 18 Xu Qingling visits

"Lin Dong!"

Lin Dong had just returned to the bottom of his apartment building when suddenly, a joyful shout rang out from beside him.

Ok?

Lin Dong paused, turning his head to look in the direction of the sound.

Just then, Xu Qingling came downstairs with her mother, carrying two gift boxes in her hands.

"I was just about to go to your house to look for you, and then I ran into you!" Xu Qingling broke free from her mother's hand and ran to Lin Dong, calling out with a face full of joy.

Today she was wearing a light blue dress, revealing a section of her fair and delicate calves. Her hair was tied in a cute bun, and she still smelled of fresh shower gel after taking a shower.

Lin Dong didn't find the faint fragrance offensive. He called Zhou Xiaoyan, who came over behind him, "Auntie," and looked at Xu Qingling with curiosity.

"Didn't you go on a trip with your aunt and uncle? You're back so soon?"

Compared to his summer vacation, which consisted of either reading and studying or tinkering with gadgets, Xu Qingling's summer vacation was much more colorful.

Since Xu Qingling started elementary school, Xu Ziming and his wife have been saving all their regular holidays and annual leave.

During winter and summer vacations when Xu Qingling doesn't have to attend classes, the two of them would take her on trips unless there was any particularly urgent work.

Moreover, it's different from the kind of travel that many parents like to take their children to popular tourist attractions, take photos, and check in.

Xu Ziming and his wife specialize in taking their children to less-visited tourist attractions, and they can also tell the children about the history and culture of these places.

This also resulted in Xu Qingling never getting a low score on her Chinese composition since the third grade of elementary school in her previous life; she got full marks in at least six or seven out of ten exams.

"Dad received a call saying there was an urgent matter at work, so we came back first."

Xu Qingling explained, then handed a gift box to Lin Dong: "Hey, this is a gift I brought back for you from my trip."

"Just one?"

Lin Dong didn't stand on ceremony. He took the gift box and walked home, glancing at the remaining gift box in Xu Qingling's hand: "Why do I see two gift boxes?"

"This is for Aunt Xia, not for you." Xu Qingling wrinkled her nose and hid the gift box behind her back, as if afraid that Lin Dong would come and snatch it.

"Oh, I see."

Lin Dong smiled and gave a thumbs up: "Student Xu has been very adept at navigating social situations lately."

"Of course!"

Xu Qingling proudly raised her little head and boasted in an adult's tone, "Who am I? I'm Xu Qingling!"

"Xiao Dong." At this moment, the three of them arrived downstairs at Lin Yi's house, and Zhou Xiaoyan called out to Lin Dong.

"What's wrong with Aunt Zhou?" Lin Dong stopped and asked curiously.

"Auntie still has some work to do. You can take Qingling to your house to play first. I'll come back to pick her up later when she needs to go home," Zhou Xiaoyan said apologetically.

"Aunt Zhou, you go ahead with your work. I'll keep an eye on her." Lin Dong didn't refuse and readily agreed.

"Mom, be careful." Xu Qingling waved goodbye with some reluctance.

"Yes, be polite when you go up there. Call them uncle and aunt." Zhou Xiaoyan instructed, then turned and walked towards the core area of ​​the Chengdu Aircraft Industry Group base.

After Zhou Xiaoyan's figure disappeared from sight, Xu Qingling withdrew her gaze, skillfully pressed the elevator button, then pressed the floor number for Lin Dong's house, and beckoned Lin Dong to come in.

Since the laser incident, the two families have frequently visited each other on weekends, and she is already very familiar with the Lin family's home.

"Lin Dong, what are we going to play later?"

Xu Qingling watched the elevator numbers rise steadily and suddenly asked curiously, "Is the fighter jet you mentioned last time ready?"

"It's a model drone, not a fighter jet."

Lin Dong corrected Xu Qingling's statement: "The model drone was completed today, and it has just completed a test flight."

Compared to modern fighter jets that weigh tens of tons, model airplanes are a system that is much simpler.

With his current skill level, he has far too little knowledge to design a fighter jet.

Even with sufficient knowledge, a person can still die from overwork while drawing blueprints.

After all, a model airplane only has about three thousand parts, and it took him half a month to design the blueprints and verify the data.

A modern fighter jet has at least hundreds of thousands of parts, which is a completely different level of workload.

"It's finished?!"

Xu Qingling exclaimed in surprise, then seemed to remember something: "Was that the small plane that landed on the playground next to Uncle Lin's lab just now? I saw it!"

"right."

Lin Dong nodded and waved the laptop in his hand: "We'll continue with the battery life and avionics performance tests later. You can join us. Let's play this tonight."

"Wow! Really?" Xu Qingling exclaimed in disbelief, her face full of surprise. "This is my first time riding a real big airplane."

"real."

Lin Dong smiled and said, "But you can't move around randomly. I'll tell you how to operate it once we get to the no-man's-land."

"Yes, yes, I will definitely be good." Xu Qingling nodded obediently.

After chatting for a while, the elevator arrived at the floor, and Zhang Xiali, having already received a message from Zhou Xiaoyan, opened the door.

"Qingling, come in quickly!"

Zhang Xiali waved enthusiastically to Xu Qingling, then looked at Lin Dong, who was walking out of the elevator with her: "The food is in the kitchen. Remember to heat it up in the microwave before eating."

"understood."

Lin Dong looked at his mother's enthusiastic way of treating Xu Qingling, and then compared it with her cold tone towards him, shook his head, changed into slippers, and went into the kitchen.

Every time Xu Qingling came to visit, the treatment he received as her biological son would decline. He went from being cared for in every way, big or small, to having to do everything himself. He had long since gotten used to this.

Lin Dong heated up the dinner Zhang Xiali had prepared in the microwave, then ate it while opening his laptop to find a civil aviation route map of the southwestern region of Daxia. He was looking for a route that could avoid the civil aviation routes and the Southwest Military Region, while still meeting the requirements for the endurance test.

Because it uses a low-bypass turbofan, the engine has a higher thrust-to-weight ratio and higher fuel efficiency.

His model airplane, fully fueled, is expected to have a range of over 5000 kilometers. Today, he traveled 1,700 kilometers round trip across the Hengduan Mountains, and only used up about a third of the fuel.

With over 3,000 kilometers of range remaining, the route must be carefully planned to safely complete all the tests.

"Flying towards the coastline of Guangdong Province, the straight-line distance is 1,300 kilometers one way."

Lin Dong looked at the map and thought for a while, and soon came up with a general route.

His model drone had applied for testing permission and was equipped with a signal recognition device, making it a military-grade aircraft.

This way, you only need to avoid dense civilian air routes. For some non-key military areas, you don't need to deliberately avoid them as long as you don't descend.

"Okay, that's settled."

Lin Dong closed his laptop and stuffed a piece of meat into his mouth: "After we go to Guangdong to see the sea and come back, we'll still have almost a thousand kilometers of range left, which is perfect for testing the avionics performance."