每个承诺都是片面之词
[mĕi gè chéng nuò dōu shì piàn miàn zhī cí]
'Every Promise is a One-Sided Statement.' - Expresses skepticism towards commitments and pledges; suggests past disappointment with unkept promises. Indicates awareness of human fallibility and tendency to make hasty vows without proper follow-through in social bonds or romantic entanglements.