Chapter 276 Li Jiajun has been completely drained!

The fourth technical bottleneck—lightweighting—has been declared a breakthrough!

"Whew..."

Li Jiajun slumped into his chair, feeling physically drained, yet his mind was exceptionally exhilarated.

It was like pulling an all-nighter for three days straight playing a game, only to finally grind down the hardest boss.

"Who else?!"

"Just ask, who else can stop me?"

He picked up the document with a slightly inflated sense of pride, his eyes filled with the loneliness of having no equal.

Since the big mountains ahead had been crossed, the rest must just be small mounds, right?

With this relaxed mindset, Li Jiajun turned his gaze to the next rigorous indicator on the list.

【Core Indicator: Excellent Environmental Resistance】

【Key Requirement: Low-Temperature Resistance.】

【Specific Parameters: Must maintain stable material performance in an extreme low-temperature environment of minus 180°C, without becoming brittle or cracking. Note: Must adapt to ice fishing needs in extremely cold regions, as well as potential polar scientific research missions.】

Looking at this line, Li Jiajun's originally confident smile instantly twitched.

"How much?"

"Minus how many degrees?"

"One hundred eighty degrees?!"

Li Jiajun rubbed his eyes, thinking he had misread it.

After confirming that the negative sign was indeed followed by the numbers "180", he felt completely unwell.

"No..."

"Does this guy have some misunderstanding about the words 'ice fishing'?"

Li Jiajun was speechless.

"Whose ice fishing is done in an environment of minus one hundred eighty degrees?"

"Is that Earth? That's Pluto, right?"

"At that temperature, let alone fishing, even the air would almost liquefy, right? Are you going fishing or going to fish for ice popsicles?"

He felt this indicator was simply absurd, to the point where he almost wanted to throw the document into the face of that "Seasoned Old Angler" and ask if he was messing with him.

However, upon second thought, Li Jiajun rubbed his chin, various legends about the "angler" community surfacing in his mind.

"Hiss..."

"That's not right either."

"I seem to have been too hasty."

He suddenly had a realization.

He had heard before that anglers were addicted to fishing; their addiction was truly intense.

You have to know, when he was scrolling through short videos online before, he had seen a truly explosive joke.

A woman didn't want her husband to go fishing, and to keep him, she even posted a video saying that if her husband went fishing today, she would leave the door open all night.

The implication was to let other men come into the house. Such a threat, placed on any normal man, would be a fatal blow.

But! That husband actually still shouldered his Fishing Rod and left! Without even looking back!

Regarding this, Li Jiajun could only say, where is the morality? Where is the bottom line? Where is the address? Bah! Anyway, that's just the meaning of it.

Some anglers are indeed quite crazy; for the sake of fishing, they truly disregard everything.

"Since they aren't even afraid of wearing a green hat, then a low temperature of minus one hundred eighty degrees doesn't seem unacceptable, right?"

"Maybe they really want to go to those human forbidden zones to challenge the limits?"

"Anyway, I can't understand it."

Li Jiajun shook his head; although he couldn't empathize, he was deeply shocked.

"Fine then."

"The customer is God."

"Since God wants to go fishing in hell, then I, a mere mortal, can only be responsible for building the equipment for him."

Li Jiajun composed his thoughts, forcing himself to accept this premise.

The key problem now is how to solve the material's "low-temperature brittleness."

As everyone knows, most materials become as brittle as glass at extremely low temperatures.

A light bump might cause the Fishing Rod to shatter into pieces.

"Still have to find a teacher."

Li Jiajun sighed and picked up the remote control again.

Since he needed to solve the low-temperature problem, he would take a look at the coldest place in the world.

He pressed the switch button.

The image on the projection screen flashed.

The golden eagle soaring in the sky disappeared.

In its place was a vast, white, suffocating world of ice and snow.

The Arctic.

Cold winds howled, and icebergs stood tall.

Even through the screen, one could almost feel that bone-chilling cold.

Right in this forbidden zone of life, the camera moved slowly, capturing a massive white figure.

A large Polar Bear.

It was leisurely rolling on a huge piece of floating ice, occasionally jumping into the icy, bone-chilling seawater to swim a couple of laps, then climbing back up to shake off the water droplets.

That severe cold of minus tens of degrees seemed to not exist for it at all.

It was still lively and full of strength.

From the speakers, the commentator's steady voice sounded at the right moment:

"The reason the Polar Bear can survive in this extremely cold land, besides its thick layer of fat, is due to its special fur."

"If we observe under a microscope, we will find that every strand of the Polar Bear's fur is actually a hollow tubular structure."

"This hollow structure is not just for reducing weight."

"More importantly, these tiny tubes can effectively trap stagnant air."

"As everyone knows, stagnant air is the best insulating medium."

"This layer of hollow fur is like putting a down jacket filled with air on the Polar Bear, forming an excellent insulation layer that completely isolates the external low temperature from its skin..."

Hearing this, Li Jiajun's eyes suddenly lit up.

He stared intensely at the white giant on the screen, lively in the severe cold.

It was as if an electric current flashed through his mind.

"Hollow..."

"Trap air..."

"Isolate low temperature..."

He muttered these key words.

His previous thinking error was that he kept thinking about how to make the material itself resist the low temperature.

It was like making a person run in the snow without a shirt; they would definitely freeze.

But, what if he put a piece of clothing on the material?

What if he imitated the Polar Bear's fur and built a coating composed of countless tiny hollow tubes on the outermost layer of the Fishing Rod?

The air trapped inside these micro-tubes would form an insurmountable temperature barrier!

Even if it were minus one hundred eighty degrees of liquid nitrogen outside, the core carbon fiber structure inside could still be maintained within a relatively normal temperature range!

As long as the core structure doesn't lose its temperature, it won't become brittle!

"So that's it..."

"Not resistance, but isolation!"

Li Jiajun's eyes became vacant again.

He had entered that mysterious state once more.

In his vision, that Polar Bear disappeared.

In its place were countless upright, hollow micro-fibers.

They were densely arranged, like a dense forest.

Cold air currents tried to penetrate this forest, but were blocked by those countless tiny air pockets, eventually dissipating into nothingness.

And under this layer of protection, the black carbon fiber rod body still maintained its tough elasticity, still full of vitality.

This was the answer!

This was the optimal solution provided by nature through millions of years of evolution!

At this very moment, that familiar, scalp-tingling feeling of epiphany descended once again.

【Ding!】

【You observed the hollow temperature-locking structure of the Polar Bear's fur, combined with thermodynamic insulation principles and polymer materials science, and instantly grasped the molecular structure design of extreme low-temperature resistant composite materials! You have gained an epiphany of 【Polar Bear Fur Biomimetic Temperature-Locking Coating Technology】!】

Li Jiajun suddenly woke up.

He sat up straight abruptly, feeling a sense of clarity throughout his whole body.

At this moment, he completely understood how to design a special composite coating with micro-air pockets to ensure that the material would not become brittle and would maintain stable performance at extreme low temperatures.

This coating can not only withstand the ultra-low temperature of minus 180 degrees, but even lower!

Even if that angler wants to go fishing in outer space in the future, this Fishing Rod will absolutely not fail!

"Hehe, this is secure now."

Li Jiajun wiped the sweat from his forehead caused by excessive excitement.

The fifth technical bottleneck—low-temperature resistance. Conquered!