In 1939, the Japanese army pressed forward step by step. After the fall of Nanjing, the Wang Puppet regime and the Japanese secret service established an intelligence network in the south of the Yangtze River. As a "cryptography lecturer who had returned from studying abroad and was a distinguished member of the former dynasty," I was secretly activated by the military commander to sneak into the intelligence whirlpool between Shanghai and Jinling.
I was born into an old-style noble family, and my ancestors had nobles. During the troubled times, my family appeared to be attached to the puppet regime, but in fact, it was targeted by all parties. The safety of my family became an unavoidable weakness for me.
I am good at mathematics, language and code-breaking, but I am not good at trusting others; and the woman I was ordered to approach happened to be the daughter of an important official of the puppet government, and she was also a key surveillance target of the Japanese intelligence department.
On the one hand, there is a secret war of espionage under the shattered mountains and rivers, and on the other hand, family ties, marital bonds, and position choices are constantly intertwined. I must find out the mole lurking in our senior management without revealing my identity, protect my family, and send out a top-secret list related to the deployment of the Jiangnan battle.
