是我天真还是你城府深
[shì wŏ tiān zhēn hái shì nĭ chéng fŭ shēn]
This phrase means 'Am I naive, or are you deeply scheming?' It portrays feelings of bewilderment and mistrust in a romantic or friendship setting where the owner may suspect their counterpart is manipulative while considering themselves to be more transparent and less worldly.