August 15, 8:32 p.m.

Under the personal guidance of Lu An, engineers wearing thick dust-free protective clothing started the first small batch tape-out in the 7nm lithography production workshop.

This time, the tape-out probably burned about 1 million US dollars.

It's just a small amount of money, not expensive.

It depends on the yield of the production process operated by the engineers of the chip department under the personal guidance of Lu An.

Originally, after borrowing ARM's 7nm production line to successfully tape out the first chip, it can actually be mass-produced according to the same mode.

However, because the process yield is too low when ARM tapes out, and Xiaowei deliberately manipulates the design, it still needs to be taped out before it is officially put into mass production.

That's right, it's not that ARM can only produce one, but that batch of twelve pieces, and in the end only one piece succeeds......

Before starting, the engineers had had a good rest, were very energetic, and had reached a very appropriate level of physical fitness.

Inside and outside the workshop, Lu An and Rebus were waiting for the results of this tape-out.

Three hours later, the tape-out was successfully completed, a total of 30 tape-outs, and 19 were successful, and the tape-out yield was a little more than 63 percent. (PS: I really don't know the time required for a single tape-out, and some bigwigs know that they can add it.) ）

The moment he saw the result, Lu An breathed a long sigh of relief.

After all, this effort was not in vain.

Rebus, who had been waiting outside the workshop for three hours, also got the news at the same time, and he also breathed a long sigh of relief.

The yield rate of the first tape-out is very high, and the subsequent mass production will be very smooth.

Lu An left the workshop, and the rest was the efforts of the engineers themselves.

It depends on how much the yield of the production process can be improved in the subsequent mass production process.

Manufacturers such as TSMC and Samsung, after the production line technology is mature, the yield rate of the production process can generally be close to 100%.

However, at least for now, Xiaomi can move on to the next step of the new product.

............

In this total of 66 hours, Lu An never closed his eyes at all.

Engineers can work in shifts, but as the soul of the entire installation, commissioning and production process, Lu An can't rest for a moment.

Fortunately, Lu An has a system, and fortunately, Lu An's own physical fitness is very good.

It was also this time that Lu An knew that the original system was really six, and there was still physical strength and energy replenishment potions in the mall.

Is this Nima operation so sassy?

In the eyes of outsiders, Lu An relies on coffee and functional drinks to refresh himself, but in fact, Lu An relies on the system mall.

These potions were only unlocked in the third-level mall, because Lu An had never needed them, and Xiao Ri never said anything.

However, it is not expensive, and the price is 50,000 people worth a bottle.

Lu An is now a big family, and he is not afraid of this kind of small consumption at all.

...... Out of the workshop, Lu An's first sight was nothing else, but Rebus, who was just waiting in front.

Rebus watched Lu An walk out, half of the dust-free protective suit had been taken off, and a smell of sweat came to his nostrils.

Rebus didn't make any covert movements, he bent down, sixty degrees, and said in a serious voice, "Thank you, Mr. Lu, Mr. Lu for your hard work!"

Only he knows how Lu An spent these sixty-six hours.

There is only one word to describe it, the continuous rotation of the foot without touching the ground!

I am so busy that I drink water, go to the toilet, eat, and refresh myself with coffee and functional drinks.

Every minute and every second is used to the extreme, which is the ultimate of Lu An's independent distribution.

Therefore, no one can really make it simple.

Lu An could have been his second generation of Lang with peace of mind, with the Lu family's property, it doesn't matter how the family loses, and even as the second shareholder of Xiaomi, he only needs to wait for the generous dividends at the end of each year.

But he, no.

It is precisely because he knows that Lu An can live very easily, that Rebus admires Lu An even more, for sixty-six hours in a row, at least he Rebus can't do it.

Lu An only had time to wave his hand, and he smelled the smell of sweat on his body, and he went directly to the bathroom with a slight cleanliness habit.

Fifteen minutes later, Lu An took a shower, changed into pajamas, and didn't even have time to say hello to Rebus, so he threw himself on the sofa in Rebus's office here and fell into a deep sleep.

............

Early the next morning.

Lu An rolled over, woke up from the sofa, and let out a long snort.

Even with the physical strength and energy potions provided by the system, the cells of the body can't bear it after such a long period of physical and mental activity.

"Mr. Lu woke up, I'll go see if the porridge is good. ”

Rebus's voice came.

Although he didn't have a particularly easy time outside in the past two days, compared to Lu An...... Forget it, it's still not comparable.

It's not good if it's too inflated, and he Rebus still has to force the count.

Lu An washed up briefly, and Rebus came in with a dinner plate, which was filled with hot porridge. "Mr. Lu, breakfast is ready. ”

Lu An snorted, "Yo, Lao Lei personally passed the food, my treatment is suddenly a bit high!"

Rebus smiled.

"Mr. Lu recovered this night, his energy is really strong, I really admire it! Passing food is a trivial matter, I'm afraid that this porridge is not to your taste. ”

After padding the belly, Lu An and Rebus left Xiaomi's secret laboratory one after another.

Before the two left, Rebus received several reports from the chip department, and the second mass production invested 3 million US dollars, and the process yield rate was 75%.

The 10nm production line was successfully taped out, with an investment of 1 million US dollars and a tape-out yield rate of 43%.

The mass production investment is 3 million US dollars, and the process yield rate is 67%.

In other words, the 10nm tape-out lost more than 500,000 US dollars, which is about 200,000 more than the 7nm tape-out.

The mass production of 10nm lost nearly one million US dollars, which is 220,000 US dollars more than the mass production of 7nm.

It doesn't look like much, but it's a lot.

This is the gap between having Lu An's personal guidance and not having Lu An's personal guidance.

Overall, though, the chip division's process production standards are barely on track.

On the way to Kyoto Airport, Rebus briefly talked to Lu An about some small things that happened in the past two days.

"ASML's five-member technical support team was very cooperative with us, and after knowing that there was a problem within our Xiaomi, they immediately expressed sympathy, and it didn't matter at all, and they left for the Netherlands early this morning. ”

"Xiaomi has already started to prepare for the preliminary work of the second 12-inch wafer factory, and Mr. Ren of Huawei and I have been on the phone, and we will meet and discuss in detail after a while. ”

Lu An said with a smile.

"Old Lei, you don't have to tell me these things, I just want to shake my hands. ”

After a pause, Lu An's face was straight, "The engineer in the chip department needs some pressure, and you don't have to be reluctant to spend money, after the process operation level is mature, it will not only improve production capacity, but also liberate talents." ”

Rebus nodded, "Of course!"

"In addition, there is a manual for the operation process of semiconductor production...... Thirty-five percent is enough for the engineers in the chip department to absorb it for a while, and it's up to you. ”

Lu An took out a USB flash drive from the briefcase he was carrying and handed it to Rebus.

This is something he has prepared for a long time.

It's exactly thirty-five percent, no more, no less.

"As for the remaining 65 percent, we have to wait a little longer, and I've been busy sorting it out for a while. ”

Rebus took the USB flash drive, looked at it, and then asked curiously.

"Mr. Lu has something important to do lately?"

Lu An nodded, "Well, I'll go to the Great Northwest in the near future and see what the situation is like there." ”

Rebus silently gave his thumb and didn't say anything.

...... The bus is driven directly to Kyoto International Airport Terminal 1.

Lu An has already been busy with all the things that came to Kyoto this time, so he naturally has to rush home.

Before getting out of the car, Rebus said thoughtfully.

"Mr. Lu, there will be a Huaxia Industrial Foundation Summit in Modu in September, I would like to invite you to go with you, and the industry giants and industry leaders in China will participate. ”

Lu An didn't agree directly, and waved his hand, "I'll see when the time comes, I've been busy lately, and September 1st is almost here!"

============

I used to wonder what would happen if I single-mindedly coded words.

Reality tells me that I will starve to death.

emmmmm~

Heart-piercing.

Broken bowls.

== (Thanks to the leader of the alliance who robbed the name of the lonely tyrant)