hiː wʌzðə fˈɜːst ʌv dʒˈɛŋɡɪs kˈɑːnz ɹᵻtˈeɪnɚz tə fˈɔːɹmjʊlˌeɪt pˈɑːlɪsi dˈʊɹɹɪŋ ðə mˈɔŋɡɑːl ɪnvˈeɪʒənz ænd kˈɑːŋkwɛsts, ænd hiː ˈɔːlsoʊ ˌɪntɹədˈuːst mˈɛni ɐdmˈɪnɪstɹˌeɪɾɪv ɹᵻfˈɔːɹmz ɪn nˈɔːɹθ tʃˈaɪnə dˈʊɹɹɪŋ ðə ɹˈeɪn ʌv dʒˈɛŋɡɪs kˈɑːn ænd hɪz səksˈɛsɚɹ ˈɜːdʒɪdˌeɪ.
He was the first of Genghis Khan's retainers to formulate policy during the Mongol invasions and conquests, and he also introduced many administrative reforms in North China during the reign of Genghis Khan and his successor Ögedei.