Spy War in Ice City

After Japan's defeat, the Kuomintang military took over an important arsenal in the northeast. Five of our agents, secretly infiltrating the arsenal, were in single-line contact. Qin Kang, Li Xue, and Gao Fei, who were mainly executing the mission, were unaware of each other. Gao Fei, the highest leader, held the lowest position in the arsenal, causing many plans to be incompletely executed. During the mission, they grew and revised their plans, ultimately completing the two core tasks: transferring the munitions and obtaining the blueprints. — Description from novelcodex.org