[Drama Recap] Six Flying Dragons: Episode 10

On the 10th episode of 'Six Flying Dragons', Jeong Do-jeon (Kim Myeong-min) and Yi Bang-won (Yoo Ah-in) had their first meeting in the cave. Yi Bang-won displayed his respect towards Jeong Do-jeon and confessed he was the one who had altered the Border Stabilization policy.
Jeong Do-jeon lamented that Yi Bang-won's sole arbitrary action had ruined his great plan.
Jeong Do-jeon recollected his painful past when he could not have stopped the children from dying, and he became saddened with the present status of Goryeo. Yeon-hee (Jeong Yoo-mi) advised him, "Don't suffer because of your past any longer and stop torturing yourself in the present. If it's because of the violent head, then I'll take care of him. It's someone I can do so with". Yeon-hee thought that Ttang-sae (Byeon Yo-han) was the one whom Jeong Do-jeon regarded as the violent head.
However, Jeong Do-jeon clarified, "The real violent head is someone else" revealing his concerns with Yi Bang-won. Yeon-hee asked him who he was, and he answered, "It's Yi Bang-won. He is the uncontrollable violent head because he is related to Yi Seong-gye, whom I am going to enthrone".

Source : www.tvreport.co.kr/?c...
http://www.hancinema.net/spoiler-six-flying-dragons-kim-myeong-min-defines-yoo-ah-in-as-uncontrollable-violent-head-88147.html