曾经失去的曾经现在怀旧的现在
[céng jīng shī qù de céng jīng xiàn zài huái jiù de xiàn zài]
'Zeng Jing Shi Qu De Zeng Jing Xian Zai Huai Jiu De Xian Zai' means roughly 'the past that was lost, now the present becomes memories to long for.' This portrays a sense of regret or melancholy, missing the things or time already lost.