深知你是病深信你是药
[shēn zhī nĭ shì bìng shēn xìn nĭ shì yào]
A poignant expression that means 'I deeply know you are sick, but firmly believe you are my medicine'. It illustrates complex intertwined feelings—recognition of another's troubles, while seeing oneself healed through them. It describes an unhealthy dependency or mutual support relationship.