久伴不离久爱不腻
[jiŭ bàn bù lí jiŭ ài bù nì]
'Jiu Ban Bu Li Jiu Ai Bu Ni' can translate into 'Stay Long Without Leaving And In Long-Term Love Not Getting Bored'. Conveys loyalty, dedication and enduring affection in a relationship where there isn't any monotony or tedium despite the longevity.