我爱你有生之年我爱你心死之前
[wŏ ài nĭ yŏu shēng zhī nián wŏ ài nĭ xīn sĭ zhī qián]
Translating as 'I love you in all my living years before I lose my heart’, this is an earnest confession or declaration. It implies the depth and duration of one’s affection, emphasizing lifelong dedication.