Reborn in 1977, I will no longer be my brother's blood bag.

The next morning, the automatic control class discussed feedback.

The teacher drew three lines on the blackboard.

If a front-end error goes unnoticed in the middle, it will result in the most rework in the end.

"If something goes wrong, we can't wait until it's finished before looking for it."

"The longer it's delayed, the more effort it will take."

Lin Xiuhe placed the repair order for the twelfth unit under her textbook.

The date is available.

Models are available.

In the leak detection section, it says "Pass".

Beyond that, it's all empty.

As soon as the bell rang, she closed her book.

Zhao Guodong had already picked up the toolbox.

"Shouldn't they be demolished today?"

"First, find out where it came from."

"I searched all over yesterday, but no one recognized me."

That's why we need to look for it.

When the three arrived at the North City Factory, Lao Shao was squatting in the repair area.

The twelfth unit was moved to the side of the wall.

There was a layer of dust on the outer shell, and where the sticker used to be, there was only a whitish adhesive residue left.

Old Shao tapped the base with a wrench.

"Are you still checking this one?"

Lin Xiuhe handed over the repair order.

"It says it has been leak-checked."

Chen San called out from beside the water trough:

"It was already over."

"I remember this one."

Old Shao raised his head.

"You said you couldn't remember yesterday."

Chen San draped his gloves over the edge of the sink.

"I can't remember the model number."

"I remember there was a piece chipped off the corner of this shell."

He walked over and pointed to the bottom right corner.

"No bubbles appeared during the leak detection."

Zhao Guodong asked:

"No bubbles appeared, so why did it leak during the test run?"

Chen San got angry.

"Then ask about welding."

Someone overheard this from the welding station and turned back:

"Don't attribute everything to welding."

"It was fine after one leak test, but it broke as soon as it got to you?"

The two sides, separated by half a workshop, started arguing.

Old Shao threw the wrench into the box.

"Shut up, all of you."

"Even if we argue for three days, the twelfth station won't speak up on its own."

Lin Xiuhe squatted down next to the machine.

There was water stain on one side of the base, but the other side was clean, and reddish mud was stuck in the gaps between the wheels.

She reached out and picked off a little bit.

Zhao Guodong leaned closer.

"What is this?"

"The soil over by the back door."

Broken bricks were laid outside the back door of the welding station.

When it rains, the ground is covered in red mud.

The leak detection area is always flooded; the mud should have been washed away long ago by the wheels rolling over it.

Lin Xiuhe looked at the outer shell again.

There was a smudge of red chalk on the corner of the shell.

The color is very light.

It looks like it's been wiped clean.

She asked Chen San:

"What color do you use for leak detection?"

"White."

"What about welding?"

Sun Dayong responded from behind the stage:

"We also use white."

Lin Xiuhe showed the little bit of rouge to Lao Shao.

Who in the factory uses red chalk?

Old Shao frowned and thought for a while.

Urgent.

"I'm afraid it might get mixed up with regular parts and occasionally get a red mark."

Zhao Guodong realized what was happening.

"Is the twelfth shipment urgent?"

It wasn't written on the repair order.

Chen San also shook his head.

"Nobody said anything when it was delivered to me."

Lin Xiuhe searched around the machine base again.

The bottom nut of a machine that has been leak-tested will have a watermark.

It's on the right side of the twelfth stage.

There's nothing on the left; it looks like only half the water has been submerged.

She asked Chen San:

"Was this machine really put in the sink?"

Chen San squatted down and stared at the base.

"It should have been there."

"should?"

There were many machines that day.

"I had just retrieved one when someone pushed two more urgent packages over from the side."

Who pushed it?

Chen Sanchao raised his chin towards the welding back door.

"That Cui from Group Two."

Sun Dayong immediately cursed:

"Stop throwing dirty water on our group."

Chen San wouldn't allow it either.

"Is that right? Send someone to ask."

Xiao Cui was moving copper pipes when he was called over; his hands were covered in black ash.

Ma Jiancheng also followed.

"What's going on now?"

Old Shao pushed the twelfth station forward.

"Ask it how it got into the leak detection area."

When Xiao Cui saw the red mark, his expression changed.

"This machine... was urged on by Deputy Factory Director Zheng."

Ma Jiancheng asked:

"How was it delivered?"

"The main entrance was blocked that day."

"I pushed through the welding back door, and the sink was also full of people."

"Chen San is busy, so I'll just put it aside for now."

Chen San slapped his thigh in anger.

"You call that putting it aside?"

"You pushed it directly onto the test vehicle!"

Xiao Cui hurriedly waved his hand.

"no."

"I remember checking it."

"Who inspected it?"

"I……"

He opened his mouth, then looked down at the ground.

Everyone in the workshop was watching him.

After hesitating for a long time, Xiao Cui finally said:

"They were rushing me that day."

"I checked the previous one and it seemed fine, so I figured this one must be from the same batch..."

Chen San rushed over and tried to grab him by the collar.

"You didn't do the inspection, so why should I be held responsible?"

Ma Jiancheng blocked it.

"Let's make things clear first."

Xiao Cui stuck out his neck.

"I didn't intend to harm anyone."

"Deputy Factory Director Zheng urges them eight times a day; the customer is waiting for it."

"I skipped one step."

Sun Dayong glared at him fiercely.

"Who told you to save money?"

"You said yourself, urgent documents should be sent first!"

"I told you to cut in line, not to break the rules!"

The two of them pushed and shoved each other.

Old Shao picked up a piece of scrap wood and slammed it on the ground.

"Isn't it chaotic enough already?"

The wooden board split in two.

The noise in the workshop finally stopped.

Ma Jiancheng's face turned ashen.

"So the twelfth station didn't detect any leaks at all?"

Xiao Cui wiped his hands on his trouser leg.

"No...not a complete examination."

Chen San stood by the sink, his wet hands still dripping water.

He's been getting a lot of flak these past few days.

If there's one more machine in the repair area, the leak detection team will be the first to get a beating.

The twelfth station is also counted on him.

Now we've finally found our way back.

He pointed to the repair order.

"Cross out my name."

Ma Jiancheng picked up the list.

The section for the person responsible for leak detection was originally empty.

But everyone in the workshop assumed that Chen San had made the mistake.

He held the piece of paper, looking somewhat embarrassed.

"The factory will investigate this matter."

Chen San sneered.

"It was Comrade Lin who uncovered this discovery, even after all this time."

Ma Jiancheng did not refute.

He turned to Lin Xiuhe.

"How did you figure that out?"

Lin Xiuhe pointed to the wheels.

"Red mud at the back door."

Then it points to the base.

"Only half of it was wet."

Finally, there was that pink mark.

"Urgent" mark.

With the three locations aligned, it's clear which route the twelfth station took.

Zhao Guodong walked around the machine once.

"So it didn't fail after a leak was detected."

"They didn't even bother to check it properly."

Lin Xiuhe nodded.

"Disassemble it first."

Zhao Guodong didn't rush to open the box this time.

He looked at Lao Shao.

Old Shao gave up his spot.

"Let's demolish it."

After the outer casing was opened, there was a thin crack on the edge of the copper pipe joint.

Not very big.

However, once the machine is running, the leaks will become more and more obvious.

Old Shao scraped the weld joint with his fingernail.

"There's a problem with this weld."

Sun Dayong leaned closer, his face grim.

"Who did the welding?"

Xiao Cui pointed to the welding station.

"On the day of the urgent dispatch...line number two."

Next to the second station, there was a new machine ready to be pushed away for leak detection.

There is also a reddish-pink mark on the lower right corner of the outer shell.

Chen San saw it and immediately went over to stop the car.

"Don't leave this one yet."

The cart pusher was getting impatient.

"What's wrong now?"

"Re-inspection."

"Deputy Factory Director Zheng is waiting to be loaded onto the truck."

"Wait."

Chen San pushed the machine to the side of the water tank.

This time, he put it in himself.

As soon as the copper pipe was submerged in the water, a string of tiny bubbles appeared at the joint.

The water was bubbling.

Everyone standing around saw it.

Ma Jiancheng pulled the delivery note out of his waist.

"stop."

The cart driver braked the cart.

The wheels left a black mark on the concrete.

Sun Dayong looked at the string of bubbles and his lips moved slightly.

Old Shao cursed first.

"It really is the same place."

Chen San turned to look at Xiao Cui.

"Still saving money?"

Xiao Cui stood at the back door, his face flushed and pale.

Ma Jiancheng walked to the water tank.

"Re-inspect all urgent documents marked in red today."

Sun Dayong became anxious.

"That output—"

"If we send them out and then return them, the output will look even worse."

Ma Jiancheng rolled up the delivery note and tapped Sun Dayong on the shoulder.

"Go find it."

"Whoever cut in line, admit it themselves."

The workshop quickly sprang into action.

Welding table flipping record.

The cart pusher is looking for an urgent item.

Chen San stood guard over the water tank, re-processing each machine one by one.

The people who were just passing the buck a moment ago are now all looking for the red powder mark.

Old Shao stood next to Lin Xiuhe.

"The twelfth station has been investigated."

"Um."

"But both of these machines have the same leak."

He placed the disassembled copper pipe fittings side by side on the wooden box.

The old one was cracked at the weld joint.

The urgent document that was just retrieved was also in the same location.

Old Shao tapped it with a wrench.

"This isn't just about cutting in line."

Upon hearing this, Ma Jiancheng turned around and asked:

"What do you mean?"

Old Shao looked at the bundle of newly received copper pipes next to the welding table.

"Check the information first."

The warehouse manager happened to bring over the material requisition form.

He slowed his pace upon hearing those words.

Ma Jiancheng called the person to a stop.

"How many copper tubes did you receive today?"

The warehouse manager was holding the order slip.

"Two bundles."

"How much did you use?"

"Channels 2 and 3..."

"Most of it has already been used."