舊瓶裝新酒 [旧－装－－]

Jyutping gau6 ping4 zong1 san1 zau2
Pinyin jiù píng zhuāng xīn jiǔ

Definitions (CC-CEDICT)
  1. lit. new wine in old bottles; fig. new concepts in an old framework
  2. (loan idiom from Matthew 9:17, but fig. meaning is opposite)