Zakko, with its starting point likely being toraijin (people from overseas who settled in early Japan and introduced Continental culture to the Japanese) engineers from the Korean Peninsula, were established by the reorganization of the bemin (members of Be) system after the Taika Reforms to serve the Imperial Court mainly with military techniques.
その原点は朝鮮半島からの渡来人技術者に由来すると考えられ、大化の改新以後の部民制再編によって成立し、主として軍事的技術面で朝廷に奉仕した。