一生有你不离不弃终生陪你永不放弃
[yī shēng yŏu nĭ bù lí bù qì zhōng shēng péi nĭ yŏng bù fàng qì]
It translates to 'Life long with you never abandon, forever accompany you never give up', indicating a steadfast vow, a commitment of eternal loyalty to someone, no matter the changes in fate and circumstance.