Shanghai Dark Line

In the autumn of the 17th year of the Republic of China, the French Concession in Shanghai. Private detective Lu Zhengyan took over a seemingly ordinary commission - businessman Chen Yongren died mysteriously after leaving behind three death reports and an HSBC safe key. The key opens a ledger, which implicates an intelligence network covering Shanghai. Six months later, Zhou Mingyuan, a surveyor of the Military Administration, died in Zhabei, carrying half of a fragment of a defense map with him. The boss of Jinyue Building saw drawings that he shouldn't have seen. Akun, who repaired clocks, witnessed the murder of the pier. Miss Su, who played the piano, handed over the first note with her name written on it. In the darkness of this city, someone is drawing a complete defense map - from the archives of the Surveying and Mapping Administration to the cargo ships of Japanese trading companies, from the detention center in the French Concession to the Japanese-style mansions in Hongkou. What Lu Zhengyan faced was not a murderer, but a war machine codenamed "Project Bamboo Leaf". He can win one battle, but can he win the entire war? "Shanghai Secret Line" is set in Shanghai from 1928 to 1937, telling the story of a ten-year secret war between a private detective and a Japanese intelligence officer. The four volumes revolve around four core cases - ledgers, maps, directories, and assassinations. This is a spy war, and it is also a choice made by every ordinary person when the great era comes.