I watched all 50 episodes, well actually I fell asleep in the middle of a few, and I must say I was underwhelmed. I don't know if it was the way the main couple was presented or the acting; but it was "one-note" if you know what I mean. Also, I think that the actors were too old at the beginning of the drama, I think the story would have been better served if they had used teen actors. Over-all I can understand why so many fast-forwarded their way through this drama or dropped it altogether.
If you are in the mood for a drama about the founding of a dynasty I recommend Six Flying Dragons.