Honestly on of the best Manhwa's I've read so far. Man I've been brought to tears because of some the chapters. The art is absolutely incredible, though the first few chapters art are a bit meh, it get A LOT better later on into the story. I must say, it is a lot of reading, but man it's worth it.
I havent read the Romance of The Three Kingdoms, but I still understood what was going on in the story.
DON'T SKIP CHAPTERS. I know you might be tempted to skip all the conversations and just move on to the action and whatnot, but trust me, each chapter is filled with information key to understanding what is going and the affairs of the characters.