你心似海我永溺深海
[nĭ xīn sì hăi wŏ yŏng nì shēn hăi]
Means 'Your heart is like the sea, and I drown endlessly within its depths', expressing the depth and intensity of someone's feelings towards another person, often associated with unrequited or overwhelming love. It reflects a metaphorical sense of drowning in emotions that cannot be escaped.