[鸳鸯蝴蝶 / 鴛鴦蝴蝶, yuān yang hú diéㄩㄢ ㄧㄤ˙ ㄏㄨˊ ㄉㄧㄝˊ] Mandarin ducks and butterfly (i.e. love birds); derogatory reference to populist and romantic writing around 1900
[鸳鸯蝴蝶派 / 鴛鴦蝴蝶派, yuān yang hú dié pàiㄩㄢ ㄧㄤ˙ ㄏㄨˊ ㄉㄧㄝˊ ㄆㄞˋ] Mandarin ducks and butterfly (i.e. love birds) literary school around 1900, criticized as populist and romantic by socialist realists