It is certain that in the era of Emperor Yuryaku, there was a large influx of Toraijin (people from overseas, especially from China and Korea, who settled in Japan) due to the situation in and outside Japan, and among them, the Hata clan, who had excellent skills in weaving silk fabrics, might have played an important role in building a nation under the Ritsuryo codes (criminal, administrative and civil codes).
雄略天皇の御代には、当時の国の内外の事情から、多数の渡来人があったことは事実で、とりわけ秦氏族は、先に見たように絹織物の技に秀でており、後の律令国家建設のために大いに役立ったと思われる。