Hakka originally from Korea and Japan?

[aaran]

The three major symbols of the Japanese Kingdom : bronze mirror, sword, and the royal seal stone are exactly the same as the Qin symbols. With no archaeological precedent of a gradual evolution, Yayoi culture has to be introduced from outside, and the most probable source was China. The Yayoi culture spread northeastward towards the Kanto plain and eventually became the mainstream of the Japanese culture.