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“知彼知已,百战不殆。”我国古代军事家孙子,在两千多年前就提出这种制胜谋略。那么,如何才能做到“知彼知已”呢?当然离不开情报工作。现在我们就一起看看,古代先人是如何打情报战的吧。最古老的窃听器——听瓮窃听是搜集情报的基本手段,现代间谍学也把窃听作为必学课程。我们祖先发明了人类最早的窃听器——听瓮。听瓮其实是一种口小腹大的罐子,发明距今约有2 500年,墨家的代表人物墨子专门著书,详细说明听瓮的制造和使用方法:将听瓮埋在地下,在瓮口蒙上一层薄薄的皮革。从远处通过地面传来的
“Know each other know, know yourself. ” The grandson of ancient Chinese military strategist proposed this winning strategy more than two thousand years ago. So, how can we achieve “knowing each other”? Of course, can not do without intelligence work. Now let’s take a look at how ancient ancestors fought against the war. The oldest bug - Listen to the vault is basic intelligence gathering means, modern spy also eavesdropping as a required course. Our ancestors invented the earliest human bug - listen urn. Listen to urn is actually a big mouth belly jars, invented since about 2,500 years ago, the representative of Mohist ink a book, detailing how to listen to urn manufacture and use: will listen urn buried underground, in the urn Mouth covered in a thin layer of leather. Came from afar through the ground