ㄇㄧㄥˊmíngˋㄏㄨㄤˊhuángㄏㄨㄚhuā

  1. 明日重陽節黃花菊花明日黃花重陽節欣賞菊花錯過時令毫無興味比喻過時事物·蘇軾九日次韻相逢不必歸去明日黃花。」時過境遷當時得令

lit. chrysanthemums after the Double Ninth Festival (idiom)​, fig. outdated, thing of the past, dead letter