三年之约七年之痒
[sān nián zhī yuē qī nián zhī yăng]
'三年之约七年之痒' refers to common milestones in relationships, particularly marriage. '三年之约' means a three-year promise or commitment, while '七年之痒' alludes to the infamous 'seven-year itch,' indicating when the excitement wanes and challenges arise in long-term relationships. This name expresses both anticipation and apprehension related to such pivotal moments.