On the 27th episode of SBS' 'Six Flying Dragons', Jeong Mong-ju (Kim Ee-seong) could take a look into Jeong Do-jeon (Kim Myeong-min)'s revolution plan and the new systems pertinent to the revolution. Jeong Do-jeon persuaded him about the world he had been dreaming of as well as about the revolution that would realize the new world.
While Jeong Mong-ju was amazed with the reformation and his plan to make it come true, Jeong Mong-ju said, "Let's do it within the system of Goryeo".
Jeong Do-jeon said, "Why and how. Goryeo is a society of noble people and Buddhists". He also added that the ideological Confucius country can't be a reformation itself.
Jeong Mong-ju refuted saying "It's a treason. Are you saying you want to begin the utopian Confucius country with treason?" Jeong Do-jeon said "I'll try to persuade you until I die".
Source from :Hancinema