已过期
[yĭ guò qī]
This term “Expired” could refer metaphorically to certain experiences or objects (like food) passing its prime, becoming outdated or no longer valid or fresh. Applying to a username, this could mean the person has experienced love or hope in the past that cannot be relived again, representing a somewhat pessimistic attitude towards current things, possibly alluding to nostalgia for what has been lost and accepting changes or impermanence.