Yang Li

After an Armageddon, the world's survivors rebuild a small a society with food, resources, housing and other necessities. People depend on this society to survive against the harsh living
conditions outside. But in this new society, the new rulers, they impose people to work like machines, so eliminating people's emotions, is the best way to let people put all their energy into work, and the best way to eliminate emotions is a loss of past memories. 

They claim to have developed a drug that allows the person injected to gradually lose his or her memory in a short period of time until it disappears completely. After being injected, a woman arrives in a room where a man is already waiting for her, with a ring on his finger that makes her think he is her lover. In the process of the meeting, the woman's flashback memories and the man's weird behaviour force the woman to doubt the man's identity, and when the woman finally tries to record her past, the man overpowers her. This is the cycle that society is constantly reinventing for the current survivors. A forced identity.