四目相对举案齐眉执子之手与子偕老
[sì mù xiāng duì jŭ àn qí méi zhí zi zhī shŏu yŭ zi xié lăo]
This refers to traditional vows of marriage, which express deep affection and commitment between partners, highlighting mutual respect and devotion over time (literally, it describes two people looking at each other with their brows raised in agreement, holding hands to grow old together).