深知你是梦还咬牙不放手
[shēn zhī nĭ shì mèng hái yăo yá bù fàng shŏu]
It stands for 'Even though I know our love is unattainable like a dream, I refuse to give up.' This showcases an individual's tenacity to cherish and not forsake their emotions even if knowing there will eventually be nothing but a futile effort.