lˈɪɾəl ɪz nˈoʊn ɐbˌaʊt jˈɪfuː hˈʌnz bˈækɡɹaʊnd dᵻspˈaɪt hɪz wˈʌntˈaɪm pɹˈɑːmɪnənt stˈæɾəs, æz nˈiːðɚɹ əfˈɪʃəl hˈɪstɚɹiz wˈaɪ ʃˈuː nˈɔːɹ bˈeɪ ʃi kəntˈeɪnd ɐ baɪˈɑːɡɹəfi fɔːɹ hˌɪm—ɐ fˈɛɹli ʌnjˈuːʒuːəl fˈækt, æz bˈoʊθ ʌv ðoʊz wˈɜːks wɜː dʒˈɛnɚɹəli kənsˈɪdɚd hˈaɪli kˌɑːmpɹihˈɛnsɪv ɪn ɪŋklˈuːdɪŋ baɪˈɑːɡɹəfiz, ˈiːvən fɔːɹ vˈɪlənəs fˈɪɡjɚz.
Little is known about Yifu Hun's background despite his one-time prominent status, as neither official histories Wei Shu nor Bei Shi contained a biography for him—a fairly unusual fact, as both of those works were generally considered highly comprehensive in including biographies, even for villainous figures.