Etymology

Probably a calque of Chinese 對牛彈琴 ‎(đối ngưu đàn cầm); literally "playing a musical instrument for a water buffalo"

Pronunciation

• (Hà Nội) IPA^(key): [ˀɗaːn˨˩ ɣɐj˧˩ taːj˧˧ ṯɕɜw˧˧]
• (Huế) IPA^(key): [ˀɗaːŋ˧˧ ɣɐj˧˩ taːj˧˧ ʈɜw˧˧]
• (Hồ Chí Minh City) IPA^(key): [ˀɗaːŋ˨˩ ɣɐj˨˦ taːj˧˥ ʈɜw˧˥]