Traditional Culture Encyclopedia - Photography and portraiture - What does it mean for a girl to use her back as an avatar?

What does it mean for a girl to use her back as an avatar?

One possibility is that I just like this photo of myself, so I like it and use it as my avatar. No other meaning.

Second, the back gives people a feeling of sadness and loneliness, which is the psychological process of this girl. Maybe something unhappy happened to her.