淡漠骚年念旧骚娘
[dàn mò sāo nián niàn jiù sāo niáng]
Combining slang terms that may be hard to translate precisely but roughly conveys a mix of being detached or indifferent yet nostalgic, where '騷年/騷娘' are internet slang for youngsters with a playful and unique style or attitude. The term carries a sense of irony.