The event of Liu Xin's participation in the attempted coup against Wang Mang~s rule, was a serious political crisis in the last years of the Xin dynasty. The fundamental reason that led to Liu Xin's involvement in planning the rebellion was the internal contradiction of the ruling group in the Xin dynasty, the struggle against Wang Mang's rule from Liu's royal family and the lower people was an important factor,and the direct reason was the experience of the Liu Xin~s family and he in person. The conspirators included Liu Xin, Dong Zhong an...