Everywhere we look, it is apparent that television dramas have become a cultural product enjoyed by the masses, a phenomenon that has become a symbol of pop culture today. But historical dramas have set themselves apart from other dramas by virtue of the ability provide historical knowledge to the audience, and naturally, has an influence that far outstrips any history book. It is because of this that no serious historian can stay ignorant or indifferent to production of historical dramas. Because of its portrayal of a controversial historical character from Korean history and the great war between the ancient Korean state of Koguryo against Sui and Tang dynasties of China, Korean audiences flocked to watch 〈Yongaesomun〉, a 100-episode historical drama produced and broadcast by Seoul Broadcasting System from July of 2006 to June of 2007, which maintained a high viewer rating during the duration of the broadcast. Yet despite declaration from the producers of 〈Yongaesomun〉 that their drama would faithfully take actual historical events into account, the drama never quite lived up to that promise. The problems with 〈Yongaesomun〉 are manifold, but can be divided to four major aspects. The first and the most outstanding error concerns the arrangement of the script itself. Aside from episodes 1 and 2, which formed the introduction, episodes 3 to 54 formed the first half, and the rest (episodes 55-100) formed the second. Yongaesomun himself, the namesake for the entire drama, was actually the main character only ill the second half. The writer's biased interest in a specific part of history made Yangdi of Sui the central figure if the first half, with Yongaesomun relegated to a minor role. Such an arrangement is an error of monumental proportions, for Yangdi and Yongaesomun have never personally met each other and, more importantly, lived generations apart. A mistaken attempt to connect the two characters mixed up the actual order of historical events as well as seriously skewing the relationships between the major characters. A warped timeline became a critical error that doomed any claims about 〈Yongaesomun〉 as a serious historical drama. The second error is no less glaring, in that it bent basic historical fact. Aside from the changing of order of historical events mentioned above, the roles assigned to a number of characters revealed wide discrepancy with the actual role they played in history. Though there is room for imagination or certain amount of fiction in a drama, a historical drama is different in that the basic facts that form the background of the story must adhere to the truth. Anything that allow pieces of fiction that contradict basic fact to enter the story line, is at best historical fusion or fantasy, and has no right to be called a historical drama. Third, the drama was dripping with fatalism and the writer's hero worship. The fatalism that was revealed many times in the drama, which claims that there are things in history that happen no matter what happens, is perhaps the greatest obstacle to proper understanding of history. In addition, excessive hero worship, overemphasis on masculinity, and a historical perspective bordering on chauvinism obviously prevented the writer from objective understanding of why things happened the way they did and why other things did not. Fourth, the writer exhibited an appalling lack of creativity by utter inability to bring new characters to life, rather relying on heavy borrowing from other literature. It was highlighted by the fact d1at personalities and appearance of many characters did not resemble the people of Koguryo, but instead were copied from epics from other countries, Writers of good dramas must consider research into the diversity of human nature his or her main responsibility, to discover the various natures and characters in real life. By choosing to borrow and copy rather than create characters, a historical drama supposedly about Koguryo was noticeable for its surprising lack of genuine people of Koguryo. Yet despite all of the abovementioned shortcomings, 〈Yongaesomun〉 was successful in introducing Koguryo to the general public and eliciting their interest. It was still able to bring many historical scenes to life in a way historians could not, a feat that would not have been possible if not for millions of dollars in production costs and labor of hundreds of cast and staff. In the end, 〈Yongaesomun〉 suffers from too many defects to be a bona fide historical epic, a historical fiction or fantasy at best. Yet it managed to open up possibilities for dramas based on the history of Koguryo. It is true that the public today learns more about history from a historical drama on TV than from historians who have failed to produce literature for the masses. Case in point, a drama like 〈Daejanggeum: Jewel in the Palace〉, frequently touted as an example of a well-made drama, can do much more for introducing Korean history and culture to the rest of the world than any historical publication. Needless to say, historians trapped in ivory towers and refusing to communicate with the rest of the world slowly are doomed to lose their place. A historian closely attuned to and recognizes the educational aspect of history must not hesitate to criticize historical programs on TV that are off the mark, and help them become programs based on historical truth that can facilitate proper understanding of history and transmission of the solid facts. Up until now, writers of historical dramas were never constrained or have limits placed upon them in creating works of 'history' that never existed. There was rarely, if at all, any criticism for having created false history without proper consultation, from paltry imagination of the individual writer. It is academic historians' arrogant neglect of historical dramas or novels enjoyed by the public that played no small part in creating this situation. Just as reviewers of art have contributed to artistic progress with criticism, so must historians dispense stem criticism upon historical novels or dramas. Also, they should not withhold any advice and consultation from creators of such works. This is unavoidable responsibility and duty historians have for advancement and progress of the popular culture industry, to make history more accessible to the public.