你若是海我愿沉溺而亡
[nĭ ruò shì hăi wŏ yuàn chén nì ér wáng]
This can be understood as 'If you are the sea, I wish to drown in your depths'. An expression of unconditional surrender and devotion, comparing oneself to a soul willing to give up everything just to merge with their ideal lover, like sinking into vastness.