They have the same actress. Both of these has made me cried a lot, very touching. Their meanings are very different, but I still recommended this because both of the storylines, to me, are very good and meaningful. Even though Dong Yi is a long drama, once you watch it, it will keep you asking for what's going to happen next and you'll keep watching it until you'll know it ended. I like Dong Yi more than Iljimae, because Dong Yi is such a inspirational drama to me.