For the last few days, i have been watching several Korean and Taiwanese drama and from what i have seen, Taiwanese's drama is much better than Korean. My best drama so far is Fated to Love You. It has 24 episodes, quite larger than any normal drama which usually around 16 or 18, but i think it's worthed to watch this one.
Oh and my advice is that you should prepare many tissues, as there are so many touching scenario which will make you cry. I like the moral story of this film. You should check it out.