在你眼里我只是她的替代品
[zài nĭ yăn lĭ wŏ zhĭ shì tā de tì dài pĭn]
This translates to 'In your eyes I'm just her replacement/substitute', suggesting feelings of inadequacy or believing oneself is merely standing in for someone else in another person's affections, reflecting on an unhealthy relationship scenario or complex emotions within a social or romantic situation.