As a fan of C-BBJX, and watched both version til the end. I can't help to compare these two. Warning : i might write some SPOILERS without realising. Story : I'm disappointed with this version, the story is one of the main reason. C-BBJX shows lot of brotherhood of the 4th prince and 13th prince, strong friendship between female main lead and 13th prince, the relation between female main lead and the (late) king - how the king loved her as his own child, how the female lead loved, respected him, yet was afraid of him at the same time. Butt in this version, 80% of the story is about 4th prince and 8th prince's romance with the female lead. The story pace of K-BBJX is also a problem, The first 8 or 10 episodes were filled with 8th prince and Hae Soo romance story, not a bad thing, but the last 10 episodes flows so quick that left so many questions. I also despise how they change K-8th prince's character all of sudden (from good to bad to not so bad). In C-BBJX, he was ambitious and honest from the start that he wanted to be king. But after the 4th prince became king, he obeyed the king and started to lived peacefully with his wife (loved it when he realised that his 1st fujin was the one who always with him, and treated her with love), and left good impression at the end. C-BBJX is more realistic, they show that not everybody are 100% bad or good, they have reasons why they become what they are. Acting : Despite Lee jun ki and Kang ha neul, i think the others are failed to deliver the character. I never hate when idols or flower boys dominate the dramas, but i always hope that they can deliver the character well. IU really didn't convince me anything, especially in the last episode. Jisoo is not much different than IU, i heard that he's a good actor based on his late works, but i have to disagree if i judge from this drama. Music : One thing i love from this version is the songs! I love almost all of the OSTs. Rewatch value : Instead of wasting another 20 hours of my life for this, i prefer to waste it on C-BBJX. Conclusion : I'm a fan of Chinese Scarlet Heart, so i was exited when they announced that they would remake into Korean versions. But now i end up disappointed because of the story mess and the actings. But the cinematography in this version is better (not much better, i don't like so many close up shoots) than the C-BBJX.