China has not relaxed its combat readiness against China, especially after the outbreak of the economic crisis, China is very clear that China will sooner or later on the road of aggression and expansion, and China is so close that any abnormal movements in China will damage China's interests. Therefore, the war preparations for China are becoming more and more complete.

A total of twenty radars were arranged in the entire Ryukyu Islands, mainly searching for areas where the warships in the north and east were often active. Qiao Yu was in front of a radar at this time.

Compared with later generations, this radar is far from comparable. The device for receiving signals is not a plate-shaped one, but uses five trumpets arranged up and down to receive signals. It looks very interesting, but this is already the best radar of this era...

Yang Sen, who is in charge of the Ryukyu guards, introduced to Qiao Yu: "President, this radar can detect targets dozens of kilometers away. Our guards are like having a clairvoyance. They can detect the opponent's actions in advance, whether it is an aircraft in the sky or a ship on the water surface, they can play a role. The technological progress is really hard to describe. In the past, in addition to relying on reconnaissance by reconnaissance, it depends more on the generals based on the situation and make their own judgments. Even a great general will make mistakes. Now after the technological progress, the situation is very different!"

"Technological progress is indeed amazing, but don't be addicted to it. Technology is not omnipotent. At critical moments, it depends on the commander's judgment. For example, radar will be affected by weather and clouds, fog on the sea will also have an impact, and the machine itself will also have problems, these are loopholes!"..

When Yang Sen heard this, his face turned slightly red. It seemed that the President was still a person who knew what he knew. He felt bloody when he spoke. The radar power was insufficient in the early stage and was greatly affected by the weather. For example, the weather in Yin Cloud will have a serious impact.

"I'll give you an idea. You can recruit a group of blind people. Although the blind people can't see their eyes, their ears will become very sensitive. If the plane invades a large amount, they can hear the sound of the engine at a longer distance, so as to prepare in advance!"

This method was not original by Qiao Yu. In history, the British used this method to deal with German planes during the Battle of Britain. However, this was the first time that Yang Sen heard about it. If you think about it carefully, the president's proposal is absolutely feasible. If a person is physically disabled, it does not mean it will be abolished. On the contrary, it will play an unexpected role.

"The president's idea is too clever, but I'm afraid there will be no enough blind people at the moment, and they also need to be trained to recognize the sound of the engine!"

"The army has already started to prepare, not only Ryukyu, but also the entire southeast coast, but also the Sino-Soviet border in the northwest. We must strengthen our vigilance to prevent accidents!"

Qiao Yu mentioned the Soviet Union. Yang Sen seemed to want to say something at this time, but he didn't know where to speak, and he looked like he was silenced.

Qiao Yu saw it and smiled and said, "Do you think Zheng Fu should attack the Soviet Union!"
Chapter completed!