Everything about this show is just incredible. The cinematography, the acting, the realistic sets and props, the heartbreaking story--truly, even though I knew this would be a tragedy and I watched the MVs for this show to prepare myself, I am still so moved by the great OST and memorable scenes.

If you're watching this show for the first time, PLEASE WATCH THIS VERSION. No doubt that the originally aired version is good too, but this version will help you understand Li Chengyin more and see where he's coming from. Furthermore, the sound effects/background music will be more effective as it'll be played more consistent with the correct characters/couples.

Other than that, the differences aren't too major (and you can read other's reviews about this show) but I truly recommend this director's cut for the full emotional experience.