这快乐都雷同这悲伤千万种
[zhè kuài lè dōu léi tóng zhè bēi shāng qiān wàn zhŏng]
Expressing that 'All this happiness is the same but there are millions of kinds of sadness'. It reflects the observation that while joys might seem similar, each sorrow can be distinct, hinting at the nuanced variety and complexity of emotional experiences, especially sadness.