你不懂的坚强我给你欠缺的温暖我来
[nĭ bù dŏng de jiān qiáng wŏ jĭ nĭ qiàn quē de wēn nuăn wŏ lái]
This phrase can be interpreted as a commitment: 'for the strength you don't understand and the warmth you lack, I will provide it.' It implies dedication in making up for another person's shortcomings.