不离不弃不忘初心不移不易不忘你我
[bù lí bù qì bù wàng chū xīn bù yí bù yì bù wàng nĭ wŏ]
Translated loosely to 'Never Part, Never Abandon, Remember the Original Aspiration, Unchanging, Always Remember You and Me'. It represents loyalty, constancy, and remembering the original promise made to each other or self. A vow or principle of never forgetting初心(primordial heart or original aspiration)