初见之欢不如久爱不散乍见之欢不如久见不厌
[chū jiàn zhī huān bù rú jiŭ ài bù sàn zhà jiàn zhī huān bù rú jiŭ jiàn bù yàn]
Translates into 'The joy of first meeting doesn’t last as long as enduring love' or 'Brief excitement fades while true companionship does not grow tiresome over time'. It praises loyalty and sustained relationships over fleeting infatuation.