Encrypted Signals? Please, Everything Is Plaintext to Me

People say transmigrating is a skill, while getting a System is like opening a mystery box. A reconnaissance agent from the national security front, killed in an accident, dives headlong into wartime Shanghai and becomes a taxi driver for the Xiangsheng Automobile Company. On one fateful trip, he is unexpectedly drawn into another, little-known intelligence operation run by the Juntong. What he never expected was that the System he got would be an old-fashioned black-and-white television set. He assumes his thoughtful System has brought him something to pass the time, never realizing that what he has awakened is a code-breaking System, one capable of detecting all kinds of signals in the air. Detecting sound waves? That's basic stuff! Electromagnetic waves are no problem either! What, they're multiply encrypted? Come on. With the System's powerful computing ability, every encrypted transmission is practically running around naked! And that's not all. Even more astonishingly, it can detect a kind of wave with an extremely unusual form...