旧人旧梦旧时光半夏半暖半倾城
[jiù rén jiù mèng jiù shí guāng bàn xià bàn nuăn bàn qīng chéng]
A poetic way to reminisce about past people ('old friends'), old memories, and those days half-lit, warm as summer sun, yet powerful and magnificent enough to dazzle the whole city. This nickname carries much sentimentality for good times and persons of the yesteryears.