Spy War 1937: I Can See Enemy Affinity!

Transmigrating to 1937 Shanghai, good news: there's a system! Bad news: it's an affinity system for dating a CEO! Worse news: the system realizes the time-space error and runs away! Looking at the names, occupations, and affinities toward people and organizations above strangers' heads, Xiao Ziguang suddenly discovers that the runaway system isn't entirely useless—using affinity for intelligence might actually work. Thus, on the anti-Japanese front, the agent codenamed Xuanwu obtains one piece of strategic intelligence after another, creating legend after legend.