wˌɛn ðə ɹˈɪtsɚɹɪˌoʊ lˈiːɡəl sˈɪstəm wʌz stˈɑːɹɾɪŋ təbi ɛnfˈoːɹst ɪn dʒəpˈæn æt ðɪ ˈɛnd ʌvðə sˈɛvənθ sˈɛntʃɚɹi, ɪɾ ɪŋklˈuːdᵻd, æz ɪn tˈæŋ tʃˈaɪnə, ɐ dᵻvˈɪʒən bᵻtwˌiːn ðoʊz tˈuː mˈeɪdʒɚ kˈæsts.
When the Ritsuryō legal system was starting to be enforced in Japan at the end of the 7th century, it included, as in Tang China, a division between those two major castes.