十年之约不忘初心十年之约不忘承诺
[shí nián zhī yuē bù wàng chū xīn shí nián zhī yuē bù wàng chéng nuò]
It means making promises for ten years and keeping those promises, never forgetting one's initial aspirations. '初心' refers to the original intention, suggesting loyalty and perseverance over time.