我是你世界的常客
[wŏ shì nĭ shì jiè de cháng kè]
Translates to 'I'm just a frequent guest in your world.' Expresses an emotional sentiment as if someone has always been in the background of another person's life as merely a visitor, feeling like they never fully belong, only being a transient element rather than a core part of the person’s inner circle or life journey.