乍见之欢怎敌久处不厌
[zhà jiàn zhī huān zĕn dí jiŭ chŭ bù yàn]
Translating roughly to 'Joy at first meeting cannot rival the joy of long-term compatibility.' It refers to initial infatuation or charm at first encounter does not compare to steady love or liking after a period of knowing someone well, stressing value in genuine, lasting relations.