新欢再新也是欢旧爱再旧也是爱
[xīn huān zài xīn yĕ shì huān jiù ài zài jiù yĕ shì ài]
This phrase roughly means 'New love, no matter how new, still brings joy; old love, no matter how outdated, remains precious.' It reflects the belief that all forms of affection, new and old, have their irreplaceable values.