This is an unprecedented gathering, but also an unprecedented celebration, there has never been such a celebration in Datang, maybe it will become the norm in the future, but this year is definitely the most special year.

This is the first time, but it definitely won't be the last.

And for that day, Li Ke even did not hesitate to show the role of electricity for the first time, mainly by erecting large horns on the relevant squares. Electricity is actually not a difficult thing for Li Ke now, after the invention of the steam engine, the main source of energy for human beings in the next many years will become boiling water.

Until Li Ke's previous life, the energy form of human boiling water still occupied the mainstream, and the two ways of change that can be seen in the future are at least only two ways for Li Ke to cross.

One is that it is possible to use the form of directly cutting magnetic inductance lines for power generation on top of controlled nuclear fusion, and it is possible that it will become a mainstream power generation device in the future controlled nuclear fusion, of course, Li Ke did not see it.

The other kind of Li Ke saw that it had been made, but the large-scale popularization was not used.

That is the fourth-generation thorium-based molten salt nuclear reactor with the technology to promote supercritical carbon dioxide for power generation, and supercritical carbon dioxide instead of water vapor.

However, in Datang, Li Ke is estimated to not see the popularization of these technologies in his lifetime, and boiling water will be the mainstream energy source for mankind for a long time in the future.

Although the power Li Ke has not yet been launched in Datang, but in fact, it is not difficult to make generators, it is estimated that there will be more than half a year at most, and then the first generator may be used in Chang'an City, and at that time, it is estimated that Datang Sleepless City will be the first place to use.

The generator driven by a large steam engine is enough for the current Datang, and the difficulty of making it is not high, what Li Ke lacks is only the popularization of basic disciplines.

To be honest, the current Datang weapons and equipment can actually be further innovated, but Li Ke is not in a hurry.

There are several reasons for this, the first of which is that it is not necessary.

The large-scale armed all-steel armor with the large military crossbows that have been equipped to the squad, as well as the bows and arrows that have been continuously popularized on a large scale, with the three-edged armor-piercing arrows, are crushing for the main enemy facing the Tang Dynasty now.

In fact, it is no different from being crushed with a rifle.

On the contrary, the rifle is not even as good as the bow and arrow, and the current rifle bullet production must not be able to keep up, mainly because of the gunpowder problem, although the basic industry is there, but there is still a long way to go before the basic industry is completely popularized on a large scale, and it will take at least five years or more to train the first batch of technicians.

At present, Li Ke has started to build a large number of technical schools near all major cities in Datang, and then began to train the first batch of workers.

If primary schools, middle schools, and universities cultivate the future of Datang, then technical schools cultivate the present of Datang.

Just like in the previous life, it was more pleasant to enter a technical secondary school than to be admitted to a university, and during this period, the popularity of technical schools was obviously higher than that of universities.

However, Li Ke is not prepared to make much change in these aspects, the promotion and progress of society is regular, although Li Ke can change, but this kind of change that does not affect the overall situation is not necessary.

In fact, the top group of people, in fact, they all have enough vision to make their own choices, and the cultivation of scientists will naturally not reduce the relevant efforts.

Therefore, in a short period of time, there is no need for any rifle and cannon, or rather, the suppressive power is not as good as that of a bow and crossbow.

Because the bow and crossbow lack arrows, when there is a lack of crossbow arrows, you can use local materials, and you can even capture the enemy, but bullets can't.

And the processing of gunpowder is not so simple, and gunpowder that cannot keep up may cause wrong effects, so Li Ke is not in a hurry at all.

Let's put it this way, the normal historical development should be like the outbreak of war in World War I and World War II, and then some technological reserves are transformed into completely new weapons, and then quickly put into use.

But what Li Ke did was to first bring the basic industry to the point of forming a primary industrial country, and then carry out the reform of weapons and equipment.

The speed of exploding equipment is much faster than it is now, because even if Li Ke makes a musket cannon now, in fact, the speed at which Datang occupies the land area will not be very fast.

It's easy to occupy, but it's hard to rule, and there are some territories that are not fully prepared for domination, so it's no good to occupy them, and it's better to lose them to the enemy first.

What Li Ke is doing now is to start reforming Datang, and second, to supplement and strengthen the defects brought about by Datang after the reform.

When Datang grows into a real giant, it's time to spread her influence.

And before that, Li Ke wants to set a goal and an example for Datang!

This gathering was a very important signal, so Li Ke also used the electricity that he had not used all along, and installed loudspeakers around the entire square.

Of course, the speakers made by Li Ke are not comparable to the speakers of later generations, and they cannot be compared, in fact, they are probably equivalent to the big speakers in each village before, but these speakers are enhanced through some technologies, and some equipment in the warehouse is used to make their sound transmission as consistent as possible.

Don't pursue sound quality or anything, you can't pursue it, these speakers are all cast in Datang.

Of course, doing these jobs, Li Ke definitely did not want to show that what he had learned in college in his previous life finally had a place to use.

In terms of power supply, Li Ke used two generators, and the strategic warehouse has a backup generator, but it is certainly not a small backup generator, in fact, there are two lines here, one line is connected to ordinary civil electricity, and the national grid is taken.

Another power supply line takes a special combat readiness line, which is supplied by a separate power station, which means that the entire city's civil power grid is out of power, and this power grid will not be without power.

In addition, the UPS is equipped with important large electronic equipment in the warehouse, but it is not the same concept as the small UPS in the office building.

So all in all, expanding to the present, Li Ke has found two 5 kilowatt gasoline generators in the entire warehouse, which are in the logistics warehouse, and Li Ke doesn't know why these two generators are used, as for the gasoline, Li Ke pumped it out of the vehicle in the parking lot.

The civilian strategic warehouse in his mind has no fuel reserves, and that is the matter of military warehouses. But fuel is so useful that they have an in-house gas station in their warehouse.

However, the internal gas station is located in the safest outer area of the entire warehouse area, which unfortunately is in a different direction from the office building, so it is not unlocked yet.