别说永远那太长情
[bié shuō yŏng yuăn nèi tài zhăng qíng]
Translated as ‘don’t say forever because it's too enduring’. Expressing reluctance or incapacity to promise eternality due to its vastness and difficulty, perhaps stemming from distrust in promises, fearing future uncertainties, or even acknowledging the limitations inherent within humanity's ability to truly grasp 'forever'.