好像那是一个春天u明明就是一个夏天u
[hăo xiàng nèi shì yī gè chūn tiān u míng míng jiù shì yī gè xià tiān u]
Translated as 'It seems like it was spring, u clearly it was summer u'. This reflects a bittersweet memory mixed up between two seasons—spring (which can signify hope) and summer (representing passion).