[2]? scum of society
[3]? I feel like a zombie
The walking dead can be likened to a person doing repetitive things every day, and his brain can "work on its own", that is, driving automatically.
In the past few years, I have been working on the autopilot, and nothing fits. In recent years, I have been walking like a corpse at work, and I have made no achievements.
Walking dead can also be used to describe a person who is doing nothing and living in a daze. Social scum refers to useless people in society. Fei described it as tired like a zombie, much like a walking corpse on the road.