鸳鸯蝴蝶 (鴛鴦蝴蝶) yuānyāng húdié

yuānyāng húdié proper noun Mandarin ducks and butterfly (i.e. love birds)
Domain: Modern Chinese 现代汉语
Notes: (CC-CEDICT '鴛鴦蝴蝶')

Also contained in

鸳鸯蝴蝶派