What is the plot of "Death Photo"? Gods help me

The plot of "Death Photo": The ghost in the printing room... Legend has it that beautiful women are happy, but Yong Qi (played by Huang Wanling) does not think so. Sitting on the chair, she looked a little haggard, and even more eerie and ghostly. She told us that she was an abandoned child, a shadow of childhood from a wealthy family, so what could she do no matter how beautiful she was? Her heart was full of feelings of loss and despair. She was studying photography, and her daily works were amazing, but she didn't have any sense of herself in them. She thought those were garbage, lifeless pictures, until the female corpse appear in front of you. This is a blurry photo. The woman in the photo reminds her of her childhood, which was full of hatred and pain. She is struggling on the edge of such grief, splitting, splitting again, her head is full of pain. Feeling the pain, she thought of scenes from her childhood, and then suddenly woke up. What was floating in front of her eyes were those incomplete images. At that moment, she suddenly discovered that the living things she had been looking for turned out to be these, the death of life. . She began to search for everything that was dead, so as to create death. Her obsession with photography of death forms triggered the violent tendencies in her memory, but in Yong Qi's eyes, everything turned into aesthetics. For such feelings, she began to do whatever it took. Fortunately, she has a friend named Baipi (played by Huang Wanjun). Their ambiguous relationship makes this friend with a fiery personality and masculine behavior very interested in her every move. She begins to enlighten her and try to get her to "correct her evil ways." There is also a boy named Jiabao (played by Leung Junyi), who is Yong Qi's classmate. His love and passionate pursuit of Yong Qi make him addicted to the point of blind obedience. In order to suit her fancy, he secretly films Yong Qi behind her back. every move. Under the guidance of her close friend Bai Pi, Yong Qi finally realized that her thoughts and actions were wrong, and she decided to change. However, it was at this time that terrible things happened. Yong Qi felt that a real killer was approaching all the time. She was a formidable opponent, not the ghost she imagined. What was even more surprising was that the killer's constant urgency made her feel that her life was in danger, and the killer's thoughts and actions would be the same as those of Yong Qi. !At this moment, Yong Qi fell into confusion again. It turned out that she was not the only one in the world! The oppressive feeling caused by the approaching killer forced Yong Qi to try to escape! She used her own cognition to engage in a psychological war with the killer that was more terrifying than killing! Success or failure? Perhaps the ending is the scariest.