"Saturday Fiction," a black and white historical spy thriller set in Shanghai in 1941, is set to open in Chinese mainland theaters on Dec. 7, according to the China Film Distribution and Exhibition Association.

Chinese actress Gong Li poses on the red carpet with her husband Jean-Michel Jarre for the premiere of the film "Saturday Fiction" during the 76th Venice International Film Festival in Venice, Italy, Sept. 4, 2019. Chinese film "Saturday Fiction" is competing for the Golden Lion along with 20 other films at the 76th Venice Film Festival, running at the Lido of the lagoon city until Sept. 7. (Photo: Xinhua)

It stars Gong Li as a film and stage actress who works undercover to gather intelligence for the Allies. She discovers the Japanese plan to attack Pearl Harbor but chooses not to share the information.

Known as "Lan Xin Da Ju Yuan" in Chinese, the film by Chinese director Lou Ye made its world premiere last week at the Venice Film Festival in Italy.

A 49-second trailer has been released for "Saturday Fiction" by the film's official Weibo account.