Lust, Caution is a 2007 erotic period espionage romantic mystery film directed by Ang Lee, based on the 1979 novella of the same name by Eileen Chang. Lust, Caution is set in Hong Kong in 1938 and in Shanghai in 1942, when the city was occupied by the Imperial Japanese Army and ruled by the puppet government led by Wang Jingwei. The film depicts a group of Chinese university students from The University of Hong Kong who plot to assassinate a high-ranking special agent and recruiter working for the puppet government by luring him into a honey trap. The film is generally accepted to be based on the historical event of Chinese spy Zheng Pingru's failed attempt to assassinate the Japanese collaborator Ding Mocun.

Lust, Caution is a novella by the Chinese writer Eileen Chang, first published in 1979. It is set in Shanghai and Hong Kong during the Second Sino-Japanese War. Reportedly, the short story "took Chang more than two decades to complete". The 2007 film of the same name by renowned Taiwanese director Ang Lee was an adaptation of this novel. The story focuses on the plight of Wang Chia-chih and her involvement in a plot to assassinate Mr. Yee, who is a co-collaborator of a Chinese collaborator with the invading Japanese force. The novella was allegedly based on a true story of the wartime spy Zheng Pingru. According to David Der-wei Wang, a professor of Chinese Literature at Harvard University, Lust, Caution “drew controversy thanks to a biographical subtext: it seems to project Chang's own wartime experience as a collaborator's lover”.