Six years have flown by.

Tang Yan has also grown from a little girl to a 20-year-old young man.

In the past 6 years, smartphones have become popular at a high speed.

It can be said that the penetration rate of smartphones is even higher than that of the current world.

After all, there are still many elderly people in the world who don't use smartphones.

Here, the elderly may not be on WeChat or Weibo, but the storage function and call function are indispensable.

Of course, the main thing is that the price of the mobile phone is so low that it is no different from giving it away for free, even if it is enough to use a flash for a lighting function.

But even though almost everyone has a smartphone, Tang Yan's task is still not completed.

Sure enough, as she expected, it was not so easy to do tasks in this small world.

She has had several time travel experiences, and she can probably figure out the relationship between the requirements of mobile phone penetration and the plot.

For example, in the world of ancient hegemony, there is no need to carry forward the mobile phone overseas.

However, in the era of study abroad, it is necessary to use smartphones all over the world.

And the original plot of this small world spans more than 2,000 years.

Even if everyone has a mobile phone now, the penetration rate is not high if you count all the births in the next 2,000 years.

Tang Yan could guess where the key to completing the task was, but there was no way but to slowly stay up.

But now that the online world is developed, she has nothing to do with scrolling on Weibo, and the sense of familiarity comes to her face, and she doesn't feel homesick at all.

Moreover, in the past 6 years, Tang Yan has been listening to Yunyi's online classes, not only has a deeper understanding of Xiuzhen, but also learned all kinds of miscellaneous studies, which can be regarded as a lot of gains.

Not only that, Yunyi also opened a special cultivation course for ordinary people on the Internet, teaching some methods of strengthening the body and some practical magic spells.

Tang Yan has been studying and has a little understanding of magic.

The progress of knowledge is only part of it, and the greater harvest is in the material.

Relying on the storage network disk, Tang Yan earned a large number of spirit stones.

It is impossible to count the specific number at all, and the unit of measurement cannot be calculated with how many spirit stones, but how many spirit stones for the storage ring.

In addition, most of the elixirs that Yun Yi demonstrated to everyone during class were put away by Tang Yan.

Magic weapons, talismans, formations, and the like, also received a small part.

Tang Yan's current soul space was already full of storage rings.

Looking at the more and more storage rings in the soul space, Tang Yan not only didn't want to go home now, but also especially wanted to stay in this small world for one hundred and eighty years.

After all, there is a lack of a Heavenly Dao, and the cultivation of the natives is not high, so there are not many cultivation worlds that can allow her to come.

Soon, another 5 years passed.

Tang Yan was still enriching himself in studying and making money, and he didn't notice the passage of time.

On this day, Tang Yan went to class as usual, and was left by Yunyi after class.

"Xiao Yan, over the years, many Jindan monks have been fooled by you, thinking that there is really the Tao of eternal teachers in this world, so they have started live classes. Now that there are a lot of teachers lecturing, can I stop my live classes? ”

Now there are indeed many teachers in the Jindan period on the online class APP, but Yuanying only has Yunyi.

However, the penetration rate of mobile phones is high enough, and it doesn't matter if Yunyi doesn't want to work.

"Just go as you wish, you don't have to ask for my opinion."

Yun Yi breathed a sigh of relief, but was a little stunned.

"I'm not going to class, so what should I do in the future?"

Tang Yan's keen sense of smell smelled the smell of wool, and his eyes lit up instantly.

"Why don't the two of us do research together, and you can study how to use spiritual power alchemy refiners."

She has cultivated the method of cultivating truth for more than 10 years, and she has some aura on her body, and she can usually refine the pill and refine the weapon.

But when he returned to his body, he couldn't cultivate the method of cultivating the truth for the sake of long-term development, and it was difficult to control the aura alchemy refiner.

Yunyi is not interested in this.

"There has been no shortage of alchemy refiners this year, I want to take it slowly."

Tang Yan was not discouraged, his eyes rolled lightly, thinking about what else he could do to gather wool.

Yun Yi didn't seem to be interested in alchemy refining tools and cultivation related to cultivation.

But the other party compares himself to himself, and what he is best at is things related to cultivation.

If you don't cultivate the truth, what else can you let the other party do?

Or rather, what else do you need?

Tang Yan pondered for a while, and suddenly his eyes lit up.

Not to mention, I really thought of one that I needed so much!

She grabbed Yunyi's sleeve with an excited face.

"Didn't I say I wanted to nurture your interest? Let's get started now! ”

Yun Yi was a little puzzled.

"Didn't you say that the functions of the mobile phone are enough for the time being?"

Tang Yan smiled and pulled Yun Yi towards the refining room.

"There are not too many functions, the key is to find something for you to do."

Yun Yi looked at the refining room with a look of resistance.

"It's not going to be another refining weapon, is it?"

"No!" Tang Yan's smile grew bigger and bigger, "This time I'll take you to feel the power of science!" ”

"What?"

"Come with me and you'll know!"

Tang Yan took Yunyi into the house and found two futons to sit down.

She asked for two pieces of information from the main god system, imported the information into the jade slip, and handed it to Yun Yi.

"Look, that's what we're both going to be working on in the next few years."

Yun Yi took the jade slip with some disapproval and put it on his forehead and looked at it.

After a while, the look of surprise on his face became stronger and stronger.

"Neuronal Junction...... Controlled nuclear fusion ...... Is this the name of these two jade slips? I'm ashamed that I can't understand a lot of the content. ”

"It's okay, we can study it together!" Tang Yan's face was full of anticipation.

Compared with Xiuzhen, what she needs more is to break out of the world, and at the same time want to build her home better.

These two technologies, in the history of the interstellar, belong to very practical and epoch-making technologies.

If it can be turned into a reality, it will not only make everyone's life more convenient and happier, but also completely solve the energy pressure and protect the environment at the same time.

Tang Yan had long had the idea of studying these two topics.

It's just that the difficulty is too high, and it is not at the same level as the plastic alternatives that have been studied in previous papers published in the world.

Even with detailed information in hand, it is extremely difficult to turn it into reality.

It can be said that if Tang Yan is the only one and has no other adventures, I am afraid it will take several years to thoroughly eat the data, then spend decades doing experiments, and finally spend decades debugging.

Time has accumulated, and it is absolutely impossible to turn the information into reality without one hundred and eighty years.

However, there is no need to work hard to complete the task now, but the completion of the task is far away. The time that needed to wait just gave Tang Yan a chance.

Although there is a difference between the cultivation realm and the present world, as long as there is no cultivation method here, the data can be turned into reality.

When he returns to the present world, give Tang Yan another year or two, and he will definitely be able to make these two epoch-making technologies come out!