wˌɛn ðə jˈuːnɪfˌaɪd mˈɔŋɡɑːl ˈɑːɹmi ˌʌndɚ dʒˈɛŋɡɪs kˈɑːn bɪɡˈæn ɐ wˈɔːɹ ʌv kˈɑːŋkwɛst ɐɡˈɛnst ðə dʒˈɪn dˈaɪnɐsti ɪn wˈʌn θˈaʊzənd tˈuːhˈʌndɹɪd ɪlˈɛvən, bˈoʊθ dʒˈɜːtʃən ænd kˈɪtən ɹˈɛbəlz dʒˈɔɪnd ðə mˈɔŋɡɑːlz ɪnðə fˈaɪt ɐɡˈɛnst ðə dʒˈɪn dˈaɪnɐsti.
When the unified Mongol army under Genghis Khan began a war of conquest against the Jin dynasty in 1211, both Jurchen and Khitan rebels joined the Mongols in the fight against the Jin dynasty.