He attempted a rebellion in order to install their son on the throne, but was stopped by military inspector Kang Cho, who killed both Kim and the king.
He would later be promoted to the offices of Vice Director of the Right (우복야; 右僕射; u pogya) and the State Finance Commissioner (삼사사; 三司使; samsa sa), and abused his power and authority.
[3] Kim used his authority to place members of his political faction in the royal court, such as Yi Chu-chŏng (이주정; 李周禎).
In order to have their son succeed the throne, Kim and the Queen Dowager forced the legitimate heir, Prince Daeryangwon (the later King Hyeonjong), to take the vows and become a Buddhist monk.
[1][4] On February 13, 1009, a large fire broke out in the palace and King Mokjong suffered from shock and became ill. Kim Ch'i-yang attempted this opportunity to seize power and place his son on the throne.