The two children were hungry and were whimpering in their aunt's arms.

Zhuang Zhimeng then handed the two children to her younger brother.

As soon as Zhuang Zhijun took the children, both of them pooped all over him.

"Oh, sis, come help me quickly."

"Haha, this is fate. It's destined that you, Junjun, will be baptized by the children."

Zeng Mengdie couldn't stop laughing as she looked at her man.

Zhuang Zhijun jumped up in exasperation.

"No, I need to take a shower and change my clothes right away."

Zhuang Zhijun grabbed his change of clothes and rushed to the bathroom.

Zhuang Zhimeng held the baby and let Meng Die breastfeed.

"Meng Die, when is your aunt coming?"

"My mom will be here today. She's the editor-in-chief of the newspaper. She'll come over as soon as she finishes her interview."

"Will you be staying here afterwards?"

"Yes, it's rare for my mom to get a day off, she'll probably stay here for a month."

“Okay, I’ll stay in the room next to yours. Everything in the room is already provided.”

"Okay, thank you, sis."

Zhuang Zhimeng patted the two children to help them burp and then put them on the bed.

"You are welcome.

"The children have eaten their fill, you should rest too. I'll go check on Ziyi."

"Yeah, I'm sleepy too."

Hong Ziyi's parents have arrived.

"Uncle, Aunt, please let me know if you need anything."

"Okay, thank you, Jiu Jiu's cousin. I'm sorry to have troubled you."

"It's alright, no trouble at all."

Zhuang Zhimeng glanced at the four children and then left Jiu Jiu's room.

The children wanted to visit their younger brother and sister, but Zhuang Zhimeng stopped them.

"They're all asleep. Let's check again in a few days."

At this moment, An Qinglin brought Hong Ziran in.

"Hey, what's this all about?"

"Hehe, Third Sister-in-law, Ziran is my girlfriend now."

"Did Ziran get accepted into a doctoral program?"

"Sister Zhimeng, I've passed the exam."

"Congratulations! Go and see your four nephews and nieces."

"Oh my god, Sister Zhimeng, my sister actually had four children?"

"Hehe, yes, two boys and two girls, and your parents are here too."

Hong Ziran hurriedly ran into the house.

An Qingbai came over after finishing helping in the kitchen.

Was that Hong Ziran just now?

An Qinglin nodded with a smile.

"Third Brother, Ziran is my girlfriend."

"Great, when are you planning to get married?"

"Probably in two years."

An Qingbai smiled.

"By then, Fatty and Nao Nao will be in junior high school, and Qing Lin, you may not even have children yet. That's really tragic."

An Qinglin was immediately speechless at his third brother's words.

"Haha, Abo, stop teasing Qinglin. Ziran has been admitted to the doctoral program and will need to study for a while."

An Qinglin felt more confident.

"That's right, my third brother always bullies me."

"Alright, alright, I'm just teasing you. How's your prosthetic limb regeneration research going?"

"Third Brother, I was just about to look for you. We already have some ideas."

We need to conduct an experiment, and we'd like to borrow some batteries.

"How about this, you come to our park. Our park's laboratory is more convenient for battery testing."

"Okay, I'll submit the report tomorrow and go there as soon as possible."

With the two new mothers and six children being cared for by their elders, Zhuang Zhimeng and An Qingbai were able to go to work with peace of mind.

More than a month has passed.

The first prototype of the prosthesis was produced.

Zhuang Zhimeng and An Qingbai invited Junjun and Qinglin to witness the first use of the prosthesis in the chairman's office.

"This rabbit's hind leg was broken by someone."

Later, the doctor performed an amputation, and now he only has three legs left.

Let's test your research findings with this rabbit first.

"Okay, sis, brother-in-law, is there anything wrong with this rabbit?"

"No problem, except for missing a leg, he is perfectly healthy."

"Okay, that's good."

We've added some medication to the prosthesis. If someone has underlying medical conditions, they might not be able to wear the prosthesis due to a rejection reaction.

“That definitely won’t work. That’s the challenge you need to overcome.”

"We understand, and we are already thinking of solutions."

As Zhuang Zhijun spoke, he put the small prosthetic leg on the rabbit's leg.

The rabbit visibly trembled and cautiously hopped up.

He suddenly tripped over his prosthetic leg and fell to the ground.

The prosthetic leg broke.

The materials inside were scattered all over the floor, only the battery was fine.

Have you yourselves seen the problem?

Zhuang Zhijun and An Qinglin nodded and took out their notebooks to take notes.

"There seems to be an electric current induction at the moment of power-on, which must be improved."

"His walking seems unsteady, and he might trip over something that indicates he's not reacting quickly enough and can't properly receive signals."

An Qingbai asked, arms crossed.

Is there anything else?

"That shouldn't be anything else, right?"

An Qingbai picked up the outer shell.

"This material won't work either. Arms and legs need to be flexible, so plastic is definitely not suitable."

"We can't find any other materials either."

"Ordinary materials are useless; only composite materials can be used."

"So, does that mean my brother-in-law (third brother) has composite materials?"

"Indeed, you should improve the internal structure first, while we work on the shape of the composite material."

Using composite materials will definitely increase the cost, so your internal operations become crucial for cost reduction.

"Understood, we'll make improvements when we get back."

"Third sister-in-law, third brother, could you find a dog or another animal with longer legs? Rabbits have too short legs."

"Okay, I'll find it for you later."

Zhuang Zhijun and An Qinglin did not linger and rushed back to the military pharmaceutical factory.

"Honey, what animals should we buy for our experiments?"

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