A movie from the 70s or 80s:

It seems that it is called "Latent Image". It is too old and takes too long. It is made in China. If there is more information, I will add it. I finally found it, as follows:

Director: Guo Baochang Huang Ling

Screenwriter: Ji Hongxu Ji Sanmeng

Starring: Han Yueqiao, Li Ping, Chi Zhiqiang, Yuan Yuan, Peng Mingyan (more)

Released: 1981

Region: Mainland China

Color: Color

Type: Drama (produced in 1981)

Story summary:

On a thunderstorm night, lightning illuminated the ancient building complex of Prince Ning’s Mansion Museum. "Ah, ghost -" a shrill scream came from the Shuiyuexuan courtyard. The commentator Lu Yihua discovered the image of a Qing Dynasty princess and the dark shadow of a man in a raincoat on the wall of the hall. Her colleague Luo Min told her brother Luo Jie, who was a detective, about this. Luo Jie, with a strong sense of responsibility as a public security officer, conducted an in-depth investigation and was determined to uncover this "ghost" mystery. Lu Yihua is passionately in love with Xiao Ling, the librarian whom she met on the street.

Xiao Ling's mysterious actions aroused Luo Jie's suspicion: Why is Xiao Ling so enthusiastic about "haunting" things? At this time, Luo...(