把最美的世界給妳把最好的青春給妳
[bă zuì mĕi de shì jiè gĕi năi bă zuì hăo de qīng chūn gĕi năi]
Meaning 'give you the most beautiful world, give you the best youth.' Expresses dedication and willingness to share everything beautiful and precious with someone special, conveying deep affection.