The work of changing the defense was carried out in an orderly manner, yes, it was the work, and the battle had become a training force to this point, and Datang and Dashi had invested a lot of troops in Mulu City, and they fought a battle every day.

It's just that the big cannibals usually have to pay the price of nearly a thousand people, and the Tang side rarely suffers casualties.

Under such circumstances, the battlefield of Dashi has become the best place for military training, and every once in a while, a group of recruits will be sent to Dashi to conduct intensive training through combat training.

Infantry artillery coordination, infantry combat coordination, and combat artillery coordination have been practiced in less than half a year.

Those tractors and bulldozers have been changed again and again, and slowly turned into infantry fighting vehicles, the huge body can stop most of the attacks of the big cannibals, and the infantry and artillery behind the chariots will cause huge casualties to the big cannibals on the battlefield.

The big cannibals also seem to know that they have become the target of the Tang Dynasty's military training at this time, but now they have to ride the tiger, they have to do it, they have to do it, if they don't want to be destroyed, then they can only go up, even if a large number of soldiers die under the guns of the Tang soldiers every day, there is no possibility of retreating.

In the past, on the border between Tianzhu and Dashi, an inconspicuous power plant is rising from the ground, and countless craftsmen and scholars from the Tang Academy of Sciences have gathered here, under the escort of nearly 50,000 Tang Army soldiers, to carry out a new experiment.

Radio transmission is a simple word, but it plays a huge role, just as the steam engine was to the Industrial Revolution.

Through coils and antennas, radio waves are transmitted to the sky, but they are transmitted in the form of rays, and if the earth is a plane, then only need to make a radio, which can basically meet the needs of transmitting information.

Unfortunately, the earth is round, and the radio sent out in the Great Eclipse cannot be received by the radio station in Chang'an, so the wavelength of radio waves has become the main research direction.

As long as you have some experience, you will know that radio waves are divided into long waves, medium waves, short waves, microwaves, the shorter the wavelength and the higher the frequency, the stronger its penetration, that is, the more it can not be reflected.

In other words, researchers at the Academy of Sciences must work out a band in which the waveform and frequency can be refracted by the ionosphere in the air, and use this band to transmit information back to Datang.

These are all the ideas that Li Chengqian put forward to those researchers of the Academy of Sciences, and it is precisely because of this that their research has a general direction.

You must know that although Datang has already had electricity under Li Chengqian's intervention, Datang's 'electricity' is completely different from later generations in terms of standards. Because Li Chengqian did not know the specific concepts of electrons and charges in later generations, nor did he know how to formulate a standard voltage and current in later generations, he could only formulate a new standard.

Although this standard can also be applied to various formulas of later generations, its standard unit is completely different from that of later generations, just as the weight of a catty in the Tang and Song dynasties is different from the weight of a catty in modern times, which can be converted to each other, but it is by no means the same.

But it is precisely because of this that the short-wave wavelength of later generations is not suitable for Datang, if the short-wave wavelength data of later generations is applied, it is not certain whether the radio waves can be received, but the equipment is burned is 100%.

It is precisely because of this that a large number of researchers were sent to Dashi, and according to the agreement when they left Datang, they changed the wavelength every three days to send a set of data, and then received it the next day, if they did not receive any information, then they needed to continue to adjust on the third day, and then continue the work on the first day on the fourth day, and so on.

Xue Rengui was still enthusiastic about this matter for a period of time at the beginning, and would go to the test site from time to time to take a look, but after waiting for two months and no results, Lao Xue slowly lost his patience.

Engaging in scientific research is not the same as marching and fighting, and the things that come out of research are often intangible, and they cannot be seen or touched, so how can generals who have fought old wars have this patience.

Seeing that those researchers were either running around, or bowing their heads to write and calculate, and counting a lot of straw paper, but in fact they didn't come up with anything, Lao Xue was already merciful if he didn't kill anyone.

Half a year passed in a blink of an eye, and just as the Great Food had just entered autumn, the radio test site suddenly boiled like an explosion, and countless people poured out of the tents, throwing their hats, clothes, and tea bowls into the sky wantonly.

Crazy, all crazy, the big soldiers in charge of camp security watched in amazement as the usually unsmiling, high-flying researchers jumped and screamed on the ground like crazy, and some of them ran to their chief's quarters to report the abnormal situation of these people to their superiors.

Xue Rengui was organizing a small battle at this time, and he was first shocked when he received a report from his subordinates.

The researchers he brought were all delicate, and when he left Chang'an, Li Chengqian specially told him that if there was one less, he would ask only others, and now they are all crazy, how can this happen.

But soon, Xue Rengui reacted, it should be the information from his subordinates that was wrong, and there must be some new progress at the radio test site, so those nerds will behave like this.

Thinking of this, Xue Rengui hurriedly explained the events on the battlefield to Liu Renliang, who was following him, and rode to the rear, intending to see what happened in person.

By the time Lao Xue arrived at the radio test site, the camp had returned to its previous quietness, and when he found the person in charge of the test site in the only house in the camp, he found that there was a row of light bulbs flashing brightly and dimly on the huge equipment that Li Chengqian had brought him.

"What's going on?" Seeing that more than a dozen people in the room were staring at those light bulbs tightly, Xue Rengui was confused and pulled past a sentry on duty at the door.

"General, I heard that they are receiving news from Chang'an!" The sentry looked at Xue Rengui, and his face was full of a group of second-hand goods.

"Shhhh......h And just when Xue Rengui was even more puzzled and wanted to ask what the sentry meant, a white coat made a silent gesture to them, and glared at them fiercely.

Xue Rengui looked at the white coat with a smile and a smile, he really couldn't understand that the light bulb was seen with his eyes, and what had to do with whether there was a sound or not.

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