This show was not supposed to be made. The novel which it is adapted from was not suitable for making a kdrama. It was simply a intellectual novel with lots of effort spent on research.........The novel felt real......And then we have a same old chaebol drama with Song joong ki made to portray a cheeky too smart irritating character. Disgrace to the author and the fans who read the novel. All what the director and writers did was copy the plot and removed any 'fillers' which made everything make sense and released it. If you are korean please do not watch this and read the novel. As for non-koreans there is no proper translation after 20 chapters.
The novel is 'Youngest Son of Sunyang'