A phrase expressing great joy or pleasure, often used when someone is thoroughly enjoying themselves or when something is very satisfying.
乎文言中用为疑问或反问的语气助词，这里相当于吗”。用来表示极度、非常、淋漓尽致地意思。
《论语·学而》有朋自远方来，不亦乐乎？”
After winning the championship, he was celebrating with friends, having a great time, truly 'bú yì lè hū'.
Learn the next connected idiom: 不亦乐乎 (bù yì lè hū) → 呼之欲出 (hū zhī yù chū)
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