In addition, continuous pressure by the powerful Menggu against the Sung dynasty led to an increase in the political asylum of priests one after another, and consequently the number of toraijin (people from overseas, especially from China and Korea, who settled in early Japan and introduced Continental culture to the Japanese) also increased.
また、宋は強大となっていく蒙古の圧迫を受け続け、僧侶の政治亡命が相次ぎ、渡来人が増加していった。