The hospital is too busy, so I'm going to join the army and become a top soldier!

Wei Shanjia and Gawa did not stay in the 400-meter obstacle course for long.

After all, their current project is to properly learn how to throw a grenade!

After the two left, Shen Yan stood at the starting point and looked at the obstacles in front of him again.

He ran the first full run in two minutes and thirty seconds.

This score isn't bad for a regular recruit.

After all, he had never systematically worked on the 400-meter obstacle course before, and many of the maneuvers were only demonstrated by Gao Zhenhai.

But Shen Yan was not satisfied.

He could clearly sense that it wasn't a matter of insufficient physical strength.

What really slows down performance is a lack of familiarity with the movements.

The take-off distance in front of the high springboard was incorrect; the jump was half a step too far.

When going up the ladder, the body swings too much, wasting the strength of the shoulders and arms.

When he climbed over the high wall, he was too close, and his upper limbs and waist and abdomen did not work together as a single force.

There's also room for optimization in low-pile nets, trenches, log bridges, and return routes!

These places, viewed individually, might only waste a second or two.

But if you add it all up, it'll be twenty or thirty seconds.

Shen Yan didn't rush to run the full 400 meters, but instead returned to the high board.

Gao Zhenhai was about to start the stopwatch, but when he saw that he hadn't stepped onto the starting line, he nodded slightly.

"No wonder he's a top student; he spotted the problem right away!"

"Running the 400-meter steeplechase more times is not necessarily better."

"If your form is wrong, you can run it a hundred times and still only master the wrong movements. Understand the individual events first, then run the entire route."

Shen Yan stretched his shoulders.

"Squad leader, when I jumped onto the high board just now, was my take-off point too close?"

"It's not that it's too close, it's that you hesitated at the last step."

Gao Zhenhai walked to the high board and tapped the ground with his toes.

"You're tall enough and have long enough legs, so you should jump here. Make sure your last step is firm, and after supporting yourself with your arms, push your waist, abdomen, and legs upwards together."

"Don't just rely on your arms to pull."

"Do you think you're doing pull-ups?"

Shen Yan nodded, took a few steps back, and started running again.

Plant your feet firmly on the ground, then jump!

As he braced his hands on the edge of the high board, he suddenly tightened his waist and abdomen, and his legs, propelled by the upward momentum, cleared the top of the board.

After landing, Shen Yan did not stop, but ran forward two steps.

It's much smoother than before.

"Great, much smoother than before, let's try again!"

Gao Zhenhai didn't praise him; he just raised his chin slightly.

Shen Yan turned around and continued.

The second time, he adjusted his take-off point forward by less than half a foot.

The third time, the palm support position was more accurate.

On the fourth time, he was able to immediately follow up with a sprint after landing.

……

Gao Zhenhai's eyelids twitched as he read it.

If a new recruit can correct half of their mistakes after practicing an obstacle course ten times, they are considered to have good comprehension.

Shen Yan is great; he understands after being told once and can fix it after being told twice!

After practicing four or five times, the movements are already quite good!

Most importantly, he did not rigidly imitate Gao Zhenhai's movements!

Instead, after understanding the logic of the movement, adjustments are made based on one's height, wingspan, and stride.

Gao Zhenhai suddenly realized that he wasn't teaching a new recruit.

It's more like inputting basic parameters into a machine that can update itself!

Once the parameters are entered, this thing will automatically update on its own without any further intervention!

After practicing the high board, Shen Yan went to the cloud ladder.

The first time he climbed the ladder, he habitually pulled hard with his arms, and the swinging of his shoulders and body was not rhythmic, making it slow and strenuous.

This time, following Gao Zhenhai's instructions, he first stabilized his shoulder blades, then coordinated his core movements with his body swing, using inertia to propel himself forward.

The movements are still not perfect, but there are far fewer ineffective wobbling movements.

After practicing several times, his speed in climbing the ladder increased significantly, and his breathing was not as disordered when he landed as it was the first time.

Next came the high wall.

……

Gao Zhenhai watched from the sidelines, growing increasingly silent.

He originally thought that Shen Yan's ability to run with heavy loads and recover quickly was due to his good physical condition.

But now it seems that what's truly terrifying about this kid isn't his physical abilities, but his learning ability!

When others practice military skills, they learn whatever the squad leader teaches them.

Shen Yan first breaks down the entire movement, figures out which part is the most time-consuming, and then finds the movement that suits him best!

He's not practicing obstacle courses at all.

They're clearly studying obstacles!

Time passed little by little.

By the time the afternoon training was almost over, Shen Yan's military uniform was soaked with sweat, and his palms were slightly red from repeated climbing and supporting.

Gao Zhenhai checked the time and then looked at his condition.

"Let's take a five-minute break."

"We'll run the full route one last time in a bit."

"After the run, regardless of the time, today is over!"

Shen Yan originally wanted to make a couple more trips, but seeing Gao Zhenhai's expression, he nodded instead.

Five minutes later, he stood back on the starting line.

Gao Zhenhai held the stopwatch, his gaze fixed on Shen Yan.

"Ready!"

Shen Yan leaned forward slightly.

"start!"

As soon as the command was given, he dashed off the starting line.

This time, Shen Yan did not accelerate at full speed from the beginning as he did the first time, but instead took the initiative to control the pace.

The most common mistake in the 400-meter steeplechase is treating the first 100 meters as a 100-meter sprint.

You might feel great rushing forward at first, but once you actually enter the obstacle course, your heart rate and breathing have already increased, making it easy for your movements to become distorted later on.

Shen Yan remained fast, but he conserved some of his energy.

Once he entered the obstacle course, the effects of his training became immediately apparent.

Passed the three-step stake test!

Cross the trench!

Jump over the low wall!

The entire process was almost uninterrupted.

Upon reaching the high board, Shen Yan precisely placed his last step in the position he had repeatedly adjusted.

Push off with both legs, support yourself with both hands on the high board, and simultaneously lift your waist, abdomen, and lower limbs, flipping your body over!

After landing, they rushed straight towards the ladder.

Gao Zhenhai glanced down at the stopwatch, then quickly looked up again.

It'll be soon!

Just those few obstacles alone saved Shen Yan at least five or six seconds!

On the ladder, Shen Yan's shoulders and back were stable, and his body swayed only slightly, yet he was able to accurately use inertia to move forward.

He released his grip on the last bar and landed steadily.

A single-plank bridge, a high wall, and a low-pile net were passed in succession.

Especially the high walls.

Shen Yan did not slow down in front of the wall. After getting close, he jumped up, put his hands on the top of the wall, pushed his waist and abdomen upward, and swung his right leg over the top of the wall.

He flipped over the wall, his entire body almost touching the top.

Gao Zhenhai's eyes have changed.

It's only been an afternoon!

The first time he ran, Shen Yan wasted at least three seconds on the high wall, but now his movements are as good as if he has practiced for several months.

After turning back, Shen Yan's breathing became noticeably heavier.

The most tiring part of the 400-meter obstacle course is never a single obstacle, but rather the continuous process of vaulting, supporting, jumping, climbing, and moving forward in a low posture while running at high speed.

My heart rate kept rising, my chest was heaving rapidly, and my shoulders, back, waist, and abdomen were constantly being strained.

But Shen Yan remained calm and followed his pre-planned route to complete the turnaround.

The last 100 meters!

Shen Yan held back no longer and suddenly accelerated with both legs.

The finish line is getting closer and closer.

Shen Yan gritted his teeth, accelerated again in the last few steps, and sprinted across the finish line in one breath!

Gao Zhenhai pressed the stopwatch.

He looked down and suddenly fell silent.

Shen Yan didn't sit down immediately. Instead, he supported himself on his knees to regulate his breathing. Only after his heart rate dropped slightly did he look up and ask:

"Class monitor, how much?"

Gao Zhenhai stared at the stopwatch and remained silent for two seconds.

"Two minutes and three seconds!"

Shen Yan paused for a moment, then turned to look at the obstacle course.

"Two minutes and three seconds..."

"Are there still three seconds left to score a point?"

"On the return trip, when crossing the trench, my center of gravity landed a bit too far back, and I was also a little slow on the high plateau. I should be able to pick up speed again!"

Gao Zhenhai's eye twitched.

My first full run took two minutes and thirty seconds.

Two minutes and three seconds later!

A full twenty-seven seconds faster!

This kind of progress would be enough to make any new recruit proud for half a year!

But Shen Yan's first reaction was that there were still three seconds left to score a point?

"You still want to run?"

Gao Zhenhai noticed Shen Yan's gaze and immediately put away the stopwatch.

Shen Yan nodded truthfully.

"I feel like I can try one more time."

"Try it my ass!"

Gao Zhenhai's face darkened on the spot.

"Training requires a gradual approach. Do you really think you're made of iron?"

Shen Yan checked his physical condition.

We've indeed reached our training ceiling for today.

Continuing to run may not improve performance; in fact, fatigue can easily lead to distorted movements.

"All right."

Shen Yan's voice clearly carried a hint of disappointment.

Just then, a familiar system notification appeared in my mind.

[The host has completed specialized training for the 400-meter obstacle course.]

[Improved upper limb support ability.]

[Improved shoulder and back coordination.]

Improved chest wall stability.

[Improved core control.]

The host gains a deeper understanding of respiratory rhythm, changes in intrathoracic pressure, and cardiopulmonary load during high-intensity exercise.

[Improved Thoracic Surgery Experience!]

[Some successful cardiac surgery techniques have been achieved!]

[Some lung surgery techniques have achieved initial success!]

A wealth of medical knowledge and operational experience quickly flooded into Shen Yan's mind!

The structure of the heart, the distribution of lung lobes, the pleural cavity, the pericardium, and the location of important blood vessels and nerves inside the pleural cavity have gradually been transformed from theoretical knowledge into clearer practical experience.

Some procedures related to heart injury repair, pericardial management, lung resection, lung tissue repair, and thoracic drainage also began to take shape rapidly in his mind.

Shen Yan quickly understood the connection!

The 400-meter obstacle course may seem like just running, jumping, climbing, and crawling, but it actually places extremely high demands on chest stability, respiratory circulation, shoulder and back strength, and cardiopulmonary endurance.

When passing through obstacles continuously, respiratory rate, intrathoracic pressure, and cardiac load are constantly changing rapidly.

The system feeds these bodily sensations back into thoracic surgery, giving him a deeper understanding of the heart, lungs, and the entire thoracic cavity structure!

Of course, having some experience does not mean that he can independently perform all highly complex cardiopulmonary surgeries under any conditions.

A true thoracic surgery also requires specialized equipment, an anesthesia team, extracorporeal circulation support, and a complete preoperative examination.

However, in terms of knowledge and operational experience, he has already passed the most difficult introductory stage.

Savoring the new knowledge that has entered my mind.

This immediately improved Shen Yan's mood considerably!

Although I can no longer practice the 400 meters.

But having this new knowledge keeps him from being bored, which is good!

……

At dinner, Gao Zhenhai sat down next to Chen Gang with his tray.

Chen Gang was eating with his head down when he saw him coming over, and casually asked:

"How did Shen Yan's practice go this afternoon?"

Upon hearing Chen Gang's question, Gao Zhenhai chuckled and then made no mention of Shen Yan's grades.

Instead, they mentioned the child's grades first!

"Gawa also ran the 400 meters with Shen Yan. It was his first time running the whole thing, and he finished in two minutes and twenty-nine seconds!"

Upon hearing this, Chen Gang's face clearly showed some surprise!

However, upon closer reflection, it's not surprising that Ga Wa, who grew up in the mountains, is highly adaptable to complex terrains such as chasing sheep, climbing slopes, and crossing ditches.

"Two points and twenty-nine, not bad!"

"Keep an eye on him; this kid has a talent for reconnaissance!"

Gao Zhenhai responded with a sound of agreement, then said as if casually:

"Shen Yan's last run this afternoon, 2 minutes and 3 seconds!"

Chen Gang stopped instantly as he picked up some food.

"How many?"

"Two minutes and three seconds."

Gao Zhenhai repeated it.

"My first full run was 2 minutes and 30 seconds, and by the end of training, I had reduced it to 2 minutes and 3 seconds!"

Chen Gang put down his chopsticks and stared at him for several seconds.

"You didn't press the wrong stopwatch button, did you?"

Gao Zhenhai's grin widened even further!

"I've been a squad leader for so many years, and how many batches of new recruits have I led?"

"How could they possibly mistime him during a 400-meter obstacle course?"

Looking at the smile on Gao Zhenhai's face, Chen Gang still felt that it was a bit too outrageous!

Improving performance by 27 seconds in just one afternoon?

"This kid's adaptability..."

Chen Gang paused for a moment, and finally could only give one evaluation.

"That's really a bit perverted!"

The two were speaking softly, and Liang Zheng happened to be sitting nearby.

When he heard "two minutes and three seconds", his chopsticks stopped in mid-air.

Liang Zheng had originally been thinking that he should try running the 400-meter obstacle course sometime to see if he could regain some of his platoon leader's authority.

Before he could even make a move, Shen Yan had already reached a time of 2 minutes and 3 seconds on the first afternoon!

When I was in military school, my best score was only around 1 point and 53.

Shen Yan scored 2.03 points in one afternoon.

Then it probably won't be long before he breaks the 1 minute and 53 seconds mark!

"Fine, let him off this time!"

"Let's not discourage him this time!"

……

On the other side, Wei Shanjia and Ga Wa also carried their trays and squeezed next to Shen Yan.

Wei Shanjia didn't even bother to eat, and immediately pressed for answers:

"Shen Yan, how many runs did you do after the morning exercises?"

Shen Yan swallowed the food in his mouth.

"Two minutes and three seconds."

Upon hearing this, Wei Shanjia suddenly lost his appetite for the meat in his mouth.

"How many?!"

"Two minutes and three seconds, what happened?"

"no!"

Wei Shanjia slammed his chopsticks down, almost standing up from his stool.

"Wasn't your first time two minutes and thirty seconds?"

"A mere afternoon, and you improved your time by twenty-seven seconds?"

"Don't tell me you had another epiphany during training!"

Shen Yan explained earnestly:

"The main problem was that I wasn't familiar with the movements."

"Practice high boards, high walls, ladders, and low stake nets separately until you are proficient, and reduce pauses and unnecessary movements, and your performance will naturally improve."

"Naturally my foot!"

Wei Shanjia refused to accept it at all.

"Who runs the 400-meter steeplechase for the first time and improves their time from 2 minutes and 30 seconds to 2 minutes and 3 seconds in just one afternoon?"

"This isn't progress."

"Did you secretly update your cheat program while we were away?"

Ga Wa also put down his chopsticks and carefully examined Shen Yan.

"It's definitely not like a normal person; my legs are sore from running that one trip!"

"Shen Yan ran there alone all afternoon, and still managed to finish in 2 minutes and 3 seconds?"

"Hey friend, is your body made of iron?"