故事里真心酸可是里面有你
[gù shì lĭ zhēn xīn suān kĕ shì lĭ miàn yŏu nĭ]
The nickname 'Gu Shi Li Zhen Xin Suan Ke Shi Na Li You Nan' which can be translated into English as 'It is truly bitter sweet inside these stories because there is you,' conveys that although the past has many painful memories, it also contains valuable and unforgettable moments, likely due to the presence of a special person in those memories. This shows a complicated mix of sorrow and sweetness when recalling the past while still having lingering feelings for that particular person.