There is no doubt that a mechanical watch with an atomic clock embedded in it to correct errors is of great value.

It can not only be used as a representative of high-tech products, but also provide a reference for the industrial development of country Z.

It also has a high practical value.

For example, a space watch that can be used as an astronaut provides accurate time data.

Adventurers who like to participate in some outdoor adventures, even if there is no cell phone signal, or no battery, do not have to worry about not knowing the current exact time.

Another example is the case of getting lost, this kind of watch, in the environment with sunlight, according to the time it displays divided by 2, and then the resulting number points to the sun, and then the direction of the watch at 12 o'clock is north...... It is possible to discern the direction in this way.

Even if the time displayed on your watch is accurate enough, you can calculate the latitude and longitude you are in according to some special methods and formulas...... This is also the positioning principle of GPS navigation in country M and Beidou navigation in country Z.

In short, with a precise amount of time, a lot of high-value information can be calculated.

And how can this kind of mechanical watch with great practical value be said to be just a meaningless product used for decoration and decoration?

So as expected, the vast majority of the hundreds of mechanical watches stacked together with gold and silver jewelry in the big pit camp on the planet Helfa are high-precision watches with atomic clocks embedded in them.

"Fortunately, only one of these mechanical watches has been left in the ...... Wrong! ”

Chen Jin's face suddenly changed.

Finished!

It seems like there is more than one piece.

In addition to the one given to my father as a gift, there seem to be seven or eight pieces of gold-plated diamonds that were sold to jewelry recycling shops or pawn shops.

There was also a mechanical watch inlaid with a large sapphire of pigeon eggs, which was handed over to Sotheby's auction house for auction and sold for a high price of more than 3 million.

What to do?

These mechanical watches may also be problematic, what to do?

"Gotta find a way to get those watches back!"

Chen Jin couldn't sit still, and his forehead was covered with cold sweat.

He couldn't imagine that if those watches were also seen to be problematic, and then an investigation would be launched, and finally locked on himself according to the clues...... He didn't dare to think about it anymore.

"No matter what the price is, those watches must be recovered!"

So early the next morning, Chen drove out early, and according to the impression left in his mind, he searched around in Shanghai City.

Gold and silver buildings, jewelry shops, pawn shops......

Two months ago, he went to these institutions, and as long as there was a little residual memory, he walked in and inquired.

"Boss, two months ago, I sold a watch to you, is that watch still there?"

"Boss, I sold you a watch before, and now I want to redeem it, that watch is very important to me."

"Boss, do you remember me, I worked with you two months ago......"

For three consecutive days, Chen Jin, who was in a hurry, ran hundreds of stores with no impression.

But even so, he only had to return three pieces of those watches.

And it cost more than 500,000 yuan, which is nearly ten times the price.

The remaining may be three or four watches, some of which the owners said they had sold to customers, while others said they had "disposed of" them...... There is basically no possibility of recovery.

The sapphire watch handed over to Sotheby's auction house, the other party said that according to the contract, since the thing had been auctioned, it could not be reversed, and refused to disclose the buyer's personal information.

Those huge "hidden dangers" that were circulating outside made him a little restless and anxious.

In order to alleviate his anxiety, he did a "elimination method" to determine whether the mechanical watches with gold and diamonds that had been circulated were all embedded in atomic clocks.

You must know that the user group that is inlaid with gold and diamonds on the watch, and the user group who buys this kind of watch, pursues the practical value of the watch, and the biggest purpose may be to "show off".

It is entirely possible that diamonds and gemstones on a watch will take up valuable dial space and make it impossible to fit an atomic clock.

Chen Jin took three recovered mechanical watches to the Dakeng camp, called the robot Dabao over, and asked it to heat the three watches violently through the high temperature of the laser.

As expected!

Due to the limited space inside, the first mechanical watch, which had no atomic clock embedded inside, was just a regular mechanical mechanism.

The same is true for the second and third blocks, which do not have embedded atomic clocks.

Chen Jin finally breathed a sigh of relief!

"I'll just say, these watches, with so much gold and diamonds, there's still room for an atomic clock in them? I should be overthinking! ”

But there are no absolutes, Chen Jin didn't dare to pack a ticket 100%, none of the mechanical watches he sold had an embedded atomic clock.

He continued to use the method of elimination, and from the pile of treasures, he sifted out all the mechanical watches inlaid with gold and diamonds.

A total of 286 pieces.

Then all of them are disassembled with laser heating to see the internal structure.

It was confirmed that 268 of them were of conventional construction and 18 of them had atomic clocks embedded in them.

The probability that such a watch belongs to a high-precision atomic clock mechanical watch is ...... 6.3%。

This probability, multiplied by the 9 watches I sold, shows that the number of atomic clocks is 0.56.

In other words, in addition to the atomic clock given to my father, there may be 0.56 atomic clocks, which are circulating in society.

Rounded up, it is counted as one piece, and theoretically, the number of people who use high-precision atomic clocks can be increased by one person at most.

The probability of accidental exposure is still quite small.

It's not particularly scary.

"Besides, nine times out of ten people who buy this kind of watch are mainly rich people, not engineers like my father, they don't particularly care about whether the time is accurate or not, whether the error is large, they buy this kind of watch, mainly for pretending...... It doesn't always matter if something is wrong. ”

Even if something is wrong, it is difficult for the other party to find Chen Jin, who has not left any personal information, through the shop in the middle.

So...... The probability of an accident should be 1 in 10,000.

Basically nothing.

Therefore, the luck psychology that the low-probability event should not happen made Chen Jin give up his efforts to continue searching.

After all, it was too much trouble and too tiring! It's really good that he can last three days.

He didn't want to invest 100% of his energy and time for a 1 in 10,000 chance event, which seemed to be worth the loss.

He needs to take care of the jewelry store.

On the Dakeng camp, the robot has recently transported a large number of equipment and raw materials, and he has to start arranging the next step, such as completely solving the power shortage problem in the Dakeng camp.

Even if it really happened, he could only come and cover up the water and earth, and try his best to fool the past.

……

That night, at the dinner table.

When Chen Jin announced that he would give up his efforts to continue looking for the stall owner.

He Li was a little distressed and said: "Son, you have been looking for three or four days, and you go out early and return late every day, and you have lost a lot of weight, don't look for it again!" You've done your best, and besides, you have your own business, how can you be busy with this kind of thing all day? ”

After speaking, she put a lot of vegetables in Chen Jin's bowl.

"Okay~"

Chen Gang couldn't say anything more, he saw his son's efforts in the past few days, and ran all over the entire Shanghai City, he really tried his best, and he couldn't find the stall owner, it was not his crime, it was just bad luck.

Now that I'm tired, I can't look for it, which is completely understandable.

Chen Jin nodded quietly, and said secretly: It's better to fool my father.

In this way, the matter of looking for the stall owner slowly came to an end.

And the atomic clock stored in the precision instrument research room of COMAC eventually evolved into an insoluble mystery in the history of scientific and technological development of country Z.