Espionage: I Can Intercept Intelligence

(Time travel + Cheat ability + No female lead) In the autumn of 1936, in the magic city. IT communications engineer Su Yuan wakes up one day as a proofreader at the Great East Daily. He brings no foresight, only a mortal body and a mind that can "hear" radio waves and tamper with information flow—within a radius of sixty meters, telegrams, phone calls, and wireless coded messages are all transparent to him. At 3 PM in the newspaper office, a coded signal always lights up on the second floor of the silk shop across Fuzhou Road. Old proofreader Zhou Ziheng visits there for a few minutes every evening after work, then sends messages to Shiliupu Wharf late at night. The owner of the cigarette shop, Old Gu, has a low-power radio on his second floor, using a different code. A piece of Yangtze River military intelligence is flowing along this secret line to an unknown sailor. He remembers the river blockade leak case two years later and the Battle of Shanghai four years later. But what he doesn't know is that in the undercurrents of this city lies his future—whether to use this "heavenly eye" to gamble for great wealth, or to stake his life on the true course of history. — Description from novelcodex.org