It is thought that they played an important role in the formation of culture and administration in ancient Japan by beginning with rice cultivation (wet rice culture) and by bringing Buddhism and temple architecture to Japan later.
（水稲）稲作に始まり、後には仏教や寺院建築技術などを日本に持ち込み、古代日本における文化・政権形成に大きな役割を演じたと考えられている。