Another theory holds that the royal family or the nobles of the Former Qin Dynasity built by the Fu clan during the Period of Sixteen Kingdoms reached Japan through the Korean Peninsula during wars.
また一説には五胡十六国時代に氐族の苻氏が建てた前秦の王族ないし貴族が戦乱の中、朝鮮半島経由で日本にたどり着いたと言う説もある。