Seeing that Song Zhewu was going to the airport to greet Wei Guanghui and his party, Xiao Guodong hurriedly stopped him and said: "Wen Ge, you must be very tired after riding a horse for two days, you should go back and rest quickly, we still have a lot of things to do at night." Besides, you have to greet everyone when they come back, and you don't have that much time. ”

Song Zhewu knew that this was Xiao Guodong establishing authority for himself, Xiao Guodong had always had a very good opinion on Song Zhewu's very civilian approach, and in order for him to establish absolute prestige in the Fourth Route Army, he had already made arrangements, and he had told him in private, asking him to neither send nor send all generals, including himself, to the consciousness of the superior.

Song Zhewu had no choice but to nod and say to a few people: "It's okay, I'll go back and rest for a while, and bring them to see me as soon as they arrive." ”

Xiao Guodong said with a smile: "Wen Ge, I know your temper, and I have arranged a banquet for you to welcome them, and the time is set at seven o'clock in the evening." However, Wei Guanghui can't go to the headquarters right away, you don't know yet, Wei Guanghui has already asked his family to come to Laiyuan, and his family has arrived three days ago. ”

Hearing that Wei Guanghui let his family come to Laiyuan, Song Zhewu's face completely softened, and it was enough to let his family live in Laiyuan.

After returning to the headquarters in the Geyuan Temple and taking a quick bath, Song Zhewu came to the office in his headquarters and sat quietly on a chair alone, waiting silently.

The time soon arrived at 17:30, but Wei Guanghui and the others had not yet arrived, and Song Zhewu's mood couldn't help but become a little anxious. Because there was no radar, not only could the pilot not accurately grasp the course, but even the ground airport could not determine the specific location of the plane, and he was deeply afraid that there would be an accident on the plane in which these people were riding.

"Radar! Radar! Song Zhewu muttered this term that he was very familiar with in his previous life over and over again in his heart. Although he really wants to have radar, he has even been working in this direction, for example, he asked Li Minghua's electronics institute to develop a radio, and he recently asked the electronics institute to carry out research on wireless positioning, all of which are technical reserves for the development of radar.

As far as wireless positioning is concerned, in fact, the technology and principle are not complicated, as long as there is a transmitting source for a certain period of time of radio signal transmission, there is one or several receiving devices can roughly determine the direction of signal transmission, if it is a moving target such as an airplane, it can also be based on the phenomenon that when there is radio wave transmission between the relative moving bodies, its transmission frequency increases and decreases accordingly with the shortening and increasing of the instantaneous relative distance, and then carries out ground guidance.

There is also radar, which has actually appeared now, but the various [***] parties and researchers have not yet realized its huge use, or rather, do not know its use. Therefore, there is no excessive manpower and material resources invested in active research and development.

As early as 1842, Doppler was the first to propose the Doppler radar principle using the Doppler effect, in 1864 Maxwell deduced the formula that can calculate the electromagnetic Porter surname, and in 1904, Husmeier invented the electric mirror, the world's first device for using radio wave echo detection, and the purpose was only to prevent collisions between ships at sea. Subsequently. With the advent of the world's first active electronic component that can amplify signals, the vacuum triode, and the research of Marconi and Franklin on the reflection of short-wave signals, it has laid a material and theoretical foundation for the use of radar. In 1922, Taylor of the United States even proposed to equip two warships with high-frequency transmitters and receivers to search for enemy ships. Even 5 years ago, Baird invented the mobile TV, the predecessor of modern television, which made screen display possible.

All these studies have been made public until now, and even Dr. Li Minghua, who has studied abroad, is very clear, and all this has made it possible to carry out real radar development now. The reason why there has not been a radar in the real sense until now is that Song Zhewu believes that it is entirely due to the reasons of thinking concepts and needs. For example, it was only in World War II that they began to pay attention to radar as a clairvoyant, so much so that they did not have radar at the time of the Battle of Midway.

Of course, this is not to say that there are no technical problems in the development of radars now, even in World War II, the "unfortunate" Germans, with the "precise surname" unique to the Germanic people, chose the K wavelength as the center wavelength of their radar, because this band can be strongly absorbed by water vapor, so that the radar in this band cannot be used in rain and foggy weather.

If Li Minghua and others carry out research on radar in the near future, it is not uncommon for them to develop radar that is even more advanced than that of Europe and the United States because of the existence of Song Zhewu's special reason.

Although Song Zhewu knows very little about electronics, he knows at least some basic principles, such as he knows: the measurement distance is actually to measure the time difference between the transmitted pulse and the echo pulse, which can be converted into the precise distance of the target; The target azimuth is measured using the sharp azimuth beam of the antenna; The elevation angle is measured by a narrow elevation beam. The height of the target can be calculated based on the elevation angle and distance; The measurement of velocity is the principle of frequency Doppler effect generated by the radar according to the relative motion between itself and the target, and so on.

Moreover, as far as Song Zhewu knows, even if he does not develop it, the real radar will soon appear. In 1931, the U.S. Naval Research Laboratory began to develop radar using the principle of beat frequency, and began to let transmitters emit continuous waves, and three years later switched to pulse waves; In January 1936, British W. Watt set up Britain's first radar station off the coast of Sofke; in 1937, the Marconi Company built 20 additional chain-direction radar stations for Britain; in 1937, the United States' first warship radar XAF test was successful; in 1941, the Soviet Union was the first to equip an aircraft with an early warning radar; in 1943, the Massachusetts Institute of Technology developed an airborne radar plane position indicator, which could take pictures of moving aircraft, and he invented a microwave early warning radar that could distinguish dozens of targets at the same time.

The anxious Song Zhewu waited until 18 o'clock, and Xiao Guodong, who was holding a black cowhide bag in his hand, accompanied Wei Guanghui to his office.

Although Wei Guanghui has only been in Outer Mongolia for a few months, it can be clearly seen that Wei Guanghui has lost a lot of weight and his skin is much rougher.

Wei Guanghui's appearance made Song Zhewu feel a little sour in his heart, hesitated for a moment, and finally stood up.

Seeing Song Zhewu, Wei Guanghui's eyes obviously showed excitement, but he still straightened up, saluted Song Zhewu in a proper manner, and reported loudly: "Wei Guanghui, commander of the cavalry of the Fourth Route Army, has successfully completed the mission of recovering Outer Mongolia, please instruct the commander." ”

Song Zhewu noticed that when Wei Guanghui reported his title, he reported as the "commander of the cavalry corps of the Fourth Route Army" and did not report to the "commander of the Outer Mongolian garrison" appointed by Nanjing.

Song Zhewu showed a slightly bitter smile on his face, walked out from behind the desk, and said as he walked: "Commander Wei, you have worked hard in the past few months, and your task has been completed very well!" The recovery of Outer Mongolia not only won glory for our Fourth Route Army, but also safeguarded the territorial sovereignty of our country, and also demonstrated the determination of our Chinese people to defend national interests. Song Zhewu said as he stretched out his hand.

Wei Guanghui did not shake Song Zhewu's outstretched hand, nor was he modest and polite, but maintained a upright posture and said, "There is still something to report to the commander." ”

Song Zhewu withdrew his hand, looked at Wei Guanghui and nodded, "Say." ”

"In October last year, Shao Lizi, vice chairman of Outer Mongolia, and Xu Shanxiang, secretary of the party department, who were sent to Kulun by Nanjing, arrived at the post. However, Xu Shanxiang, the secretary general, was different, not only did he actively prepare for the establishment of local party departments in various parts of Outer Mongolia and recruit and develop party members of all ethnic groups, but he also took the initiative to interact with the senior generals of our Fourth Route Army stationed in Outer Mongolia. In particular, he privately gave me 10 gold bars and 100,000 oceans, although he didn't say it explicitly, but I also understood that he wanted to buy me, and he accepted it on his own initiative without asking the commander. Wei Guanghui said calmly.

didn't report it at the time, but now he took the initiative to mention it, Song Zhewu was very suspicious that Xiao Guodong reminded Wei Guanghui. But even if it's true, he can't blame Xiao Guodong, the big brother Xiao Guodong, has always regarded himself and Zhang Yafei, Gao Zongbao, Zhang Tao, Liang Fang, and Wei Guanghui, the old brothers who were in the army in Tianjin, as his own brothers, and he didn't want to see the brothers turn against each other.

However, Song Zhewu had already made up his mind in his heart, if Wei Guanghui said after Xiao Guodong reminded him, then Wei Guanghui's commander of the Outer Mongolian garrison would not be able to do it, so he had to leave him in Laiyuan.

Seeing that Song Zhewu was noncommittal, Wei Guanghui then said: "The bitter cold in Outer Mongolia, the severe cold there is far from comparable to our North China, the winter clothes we brought with us can't withstand the severe cold there, especially the soldiers standing guard and patrolling can't stand it, and the local Mongolians are used to drinking wine to warm up." Among the Russian property confiscated by Outer Mongolia, there is a distillery that produces vodka, and their vodka is very strong, but it is not as good as the burning knives in our north, and the output is also limited, which cannot meet the needs of more than 100,000 of our people, so I will ask the Quartermaster Department to take out some money from the 100,000 oceans to expand the distillery, and now the wine produced by this distillery is not only enough for the needs of the troops, but also has a surplus, which is bought by the locals, and even smuggled into Russia secretly. ”

"We seized a lot of leather goods in the warehouse of the puppet regime in Choibalshan, and I used the remaining part of that money to hire someone to make a fur coat for each of our troops in Outer Mongolia."

Although Wei Guanghui transported a large amount of gold, silver, jewelry, and oceans from the princes of Outer Mongolia back to Laiyuan, the taxes of Outer Mongolia were not wanted in Nanjing, and it has been made clear that the insufficient military expenses of the garrison are made up by the taxes of Outer Mongolia. Therefore, Song Zhewu thought that it was the money that Wei Guanghui took out from the Outer Mongolian tax. If Wei Guanghui used Xu Shanxiang's money to buy him to do these things for the troops, it would be understandable. And where exactly this money came from, you can find out at a glance.

Seeing that Song Zhewu did not make a clear statement, Xiao Guodong reprimanded Wei Guanghui and said: "Guanghui, you are so confused, Xu Shanxiang wants to buy you, you should report Wen Ge at that time, but fortunately, you told Wen Ge now, it is not too late, and you used the money in the army." By the way, what about the gold bars? What did you do again? ”

Wei Guanghui said calmly: "Let me use it myself." ”

"What? You used it yourself! Xiao Guodong's eyes widened in surprise.

(To be continued)