The elder sister smiled and replied, "Haha, it's young people's business, why are we asking about it? If you ask me, it's better to be busy. Please stop joking. The little girl is thin-skinned."

As she spoke, the elder sister pulled Ling Yue over and said, "Let's not talk about that for now. Let's go take a shower first. It's so hot out here, and we're all sweaty. It'll feel good after a shower."

When everyone heard this, they didn't want to continue talking, so they just responded, "Hey, hey, okay, let's talk again when we have time."

After walking a long way, the eldest sister whispered, "If we meet on the road in the future, just nod and call me aunt."

Ling Yue nodded obediently after hearing this.

The eldest sister is also worried that Ling Yue can't withstand the attacks of these people. If she says something she shouldn't, these people will start gossiping and will dig out all your secrets. It's better for her not to say anything.

The bathhouse was similar to the big bathhouses in Northeast China, without cubicles. When the elder sister was scrubbing her back, a ten-centimeter gray object fell out, which made Ling Yue feel embarrassed. She could only cover her face and finish washing, and finally came out with a red face.

The refreshing breeze blew across my face, and I felt relaxed all over, as if my body was a lot lighter. The smile on my elder sister's face was gone, and she became much quieter.

If I had seen her so dirty in the past, I would probably have laughed and teased her.

Ling Yue took her elder sister's arm and changed the subject: "Sister, the stars are beautiful today."

"Well," the eldest sister smiled, "which star is the brightest?"

"Hmm~ It's Yuheng, one of the Big Dipper stars. It guides directions and seasons. However, like other stars, it generates light and heat through energy generated by nuclear fusion reactions."

Eldest sister: ...Well said. Don’t say it next time.

"Okay, go home and sit down and watch." He said and walked forward quickly.

"???" Ling Yue was completely confused. She was right. Thinking about it, she quickly followed: "Sister, it's true. However, this technology cannot be used at home now. But if controlled nuclear fusion is mature, it can be used to make household appliances, such as power generation, rapid cooling, rapid heating..."

As she spoke, an idea flashed through Ling Yue's mind: "Hey, sister, how about I get a water heater? That way we don't have to squeeze into the big bathhouse, we can take a bath at home."

"Okay, okay, let's go home and talk. Your hair is still wet, be careful not to catch a cold..."

The voice faded away, slowly falling under the vast moonlight.

I went home, dried my hair, and had a good sleep.

Lingyue was woken up by her biological clock. She got up and asked for two days off under the disapproving gaze of her elder sister. Together with Saturday and Sunday, it was exactly four days.

I also bought some vegetables and finally got home when the sun was at its highest.

Before Ling Yue got close, she saw two soldiers in military uniforms standing at the door.

She and her eldest sister exchanged a glance, and the eldest sister thought for a moment and said, "It should be Xiao Tang who is here."

There is no way Xiangzhong can go home at this time.

Ling Yue nodded, saluted the soldier, and then the two stepped into the courtyard. As soon as they came in, they saw Tang Nancheng chatting calmly with a soldier. These people should be the ones who sent him here.

Seeing Ling Yue coming in, Tang Nancheng struggled to stand up. Ling Yue took two steps at a time and ran over: "Don't get up."

Tang Nancheng grinned and said, "Lingyue, you're finally back."

"Brother Tang..." Ling Yue swallowed, not wanting to let out her sobs. For a moment, the compound seemed to have pressed the pause button, and no one spoke.

Tang Nancheng couldn't stand this atmosphere, and still grinned with his big white teeth, saying, "What is this for? It's just a leg."

Ling Yue took a deep breath, then slowly exhaled, smiling: "Yeah, that's right. It's just one leg. Even if you're in a wheelchair, you still have to work for me."

As she spoke, Ling Yue stuffed the stack of papers she had just bought into Tang Nancheng's arms: "Hey, thank you for putting it in my room. I'm going to go cook with my elder sister."

Tang Nancheng looked at Ling Yue in disbelief. "No way! I just arrived and you're already ordering me around. How can you be such a boss? Sister Wu, look at her."

The eldest sister smiled and walked to the kitchen: "Hey, I won't settle the lawsuit between you two. I'm going to wash the vegetables."

Ling Yue waved her hand and followed her elder sister into the kitchen.

After dinner, the sun grew brighter and brighter. Everyone returned to their rooms to take a nap. Only Ling Yue sat at the desk, writing something on a piece of paper.

Looking closely, it was a research plan for hearing aids.

Qian Zilin's ears were getting worse and worse, and he could tell from the increasingly loud voice on the phone.

In fact, an artificial cochlear implant would be the best, but Ling Yue knows nothing about medicine.

Hearing aids only need to be worn outside or inside the ear, but cochlear implants need to be implanted in the body, consisting of an internal implant part and an external part, and the external part is magnetically adsorbed on the skin at the implant site.

Current medical conditions are not sufficient to support internal implants, and Qian Zilin's ear was only injured, resulting in hearing loss, not complete deafness, so wearing a hearing aid is completely sufficient.

And from the current technology, cost and theory, wearing hearing aids is the most convenient, fastest and least risky method.

During the time she was imprisoned, Ling Yue was not idle. The number seven in her mind became her professional ghostwriter.

The production plan for the hearing aid is also included. It is just written down now to apply for funding. After all, this thing requires a lot of professional equipment.

For example, existing hearing test equipment, welding equipment, oscilloscopes, and multimeters need to be applied for, and 3D printing equipment and mold making equipment that have not yet been invented and produced also need to apply for funding for research and production.

The most troublesome thing now is that the optical cable has not been built yet, making it very difficult to receive audio signals.

The current signal is very unstable. The signal for wired telephone connection is not good, not to mention that it is impossible for hearing aids to connect to wired signals. You can't just follow the line wherever you go.

Thinking that Qian Zilin had a wire tied to his head wherever he went, Ling Yue couldn't help but shudder. Qian Zilin might kill her at that time. Well, life is important, so she had to change the plan.

Moreover, if the signal is not good, it will not be of any use even if you make it and wear it.

It also cannot directly connect to the Jiefang spacecraft in the sky, and the signal is even worse.

Ling Yue rubbed her head and really wanted to put the number seven directly into Qian Zilin's mind.

After thinking about it, she shook her head. Number seven is not safe either.

However, we can use No. 7 as a medium. First, go to the Fifth Academy to rebuild the damaged watch, then use a microcomputer to connect to the satellite, and finally let the hearing aid connect to the microcomputer to receive the signal.

This is the safest method. Once the optical cable is built, the signal can be moved to Qian Zilin's mobile phone. Qian Zilin is a dean of such a high status that he will not be unable to get a mobile phone.

While my thoughts were flying around, I was absorbed in writing, finishing one sheet after another, and the whole afternoon was a mess beside the desk.