离开的时候你说让我忘记
[lí kāi de shí hòu nĭ shuō ràng wŏ wàng jì]
Translating as 'When we leave, you tell me to forget', expressing when parting ways (either emotionally or physically) someone advises another person to let go. It shows a reluctant sentiment about ending relationships or chapters of life while also reflecting difficulty in moving on