狸猫换太子

狸貓換太子
límāohuàntàizǐ

to substitute someone's valuable item with another item

Wiktionary

Entry Composition

1 狸猫 límāo
  1. leopard cat
  2. raccoon dog
  3. palm civet
2 换 huàn
  1. to exchange
  2. to change (clothes etc)
  3. to substitute
  4. to switch
  5. to convert (currency)
3 太子 tàizǐ crown prince