Three Black Triangles (1977)
The Public Security Bureau intercept a telegram notifying foreign agents to retrieve the "110 secret". Shi Yan, head of the Reconnaissance Section, starts a campaign of counter-espionage, but one of his agents is soon killed on board a train.
- Country : China
- Genre : Thriller, Action
- Studio : Beijing Film Studio, Ningxia Film Group
- Director : Liu Chunlin, Chen Fangqian
- Cast : Lei Ming, Ling Yuan, Liu Jia, Ping Zhang, Bi Jianchang, Qin Wen