曾那么坚强的守候曾那么执着的厮守
[céng nèi me jiān qiáng de shŏu hòu céng nèi me zhí zhe de sī shŏu]
Translated as 'Once so Strong Waiting, Once So Stubbornly Holding On', this shows past efforts to remain resilient through challenging times or maintaining loyalty and perseverance in a relationship.