səspˈɪʃənz ɪmˈɜːdʒd dˈʊɹɹɪŋ ðə sˈɔŋ dˈaɪnɐsti bˌʌt ɪt wʌz nˌɑːt pɹˈuːvən ʌntˈɪl jˈæn rjˈuːədʒˌuː sˈɜːkjʊlˌeɪɾᵻd hɪz θˈiːsɪs ɪnðə kˈɪŋ dˈaɪnɐsti.
Suspicions emerged during the Song dynasty but it was not proven until Yan Ruoju circulated his thesis in the Qing dynasty.