I am not criticizing it. This must have been a really good and famous drama of that era. But it's mostly famous because of Lee Min-ho, because the story itself is very old and cliché, like a universal trope. I think every country probably has a masterpiece like this where some super rich guy falls in love with a really poor girl and his family is against it. I mean, if you watch this drama now, the current generation wouldn’t find it interesting at all.
Apart from that basic story, the drama was good overall, especially because all four characters were unique on their own. I really feel bad for the second lead. He is the greenest flag ever in K-drama 😭😭