1. Hope to start a new life: deleting the past WeChat signature may be a hope to start a new life, bid farewell to the past and start over.
2. Hide the past: Deleting the WeChat signature may also be to hide your past, which may involve some privacy or things that are not suitable for others to know.
3. Emotional changes: Deleting the WeChat signature may also be the result of emotional changes, such as feeling depressed and anxious and needing to re-examine your life and values.
4. Self-identity: Deleting the signature of WeChat may also be a manifestation of self-identity. You may need to re-examine your identity and values and find a new sense of self-identity.
In short, deleting WeChat signature may involve personal feelings, experiences, values and other aspects, which need specific analysis.