May Queen (2012)

Lost children, revenge, familly dramas... Both have this. Plus you dont know who is gonna end up together at the beginning :)

The same concept where both heroines suffer the same fate, also in both dramas the 3 main leads meet each other in their childhood and their love interest starts there... both have greed, evil doings, kidnap, murder, revenge, love triangle, dreams to fulfill, family ties...etc. if you loved one of them then you'll surely love the other one too.
But to me May Queen is by far a better melodrama and a MUST watch !!

A few mirroring actors. Both makjang. Although, may queen is more so. Both very near to my heart. ?

Both dramas are melodramas which both a childhood and adult part. Both dramas make you cry episode after episode because everything that happens to the main characters is so sad.
Also the shipbuilding theme in May Queen is comparable to the Fish Farming theme in Golden Rainbow.
Kim Yoo Jung plays the younger version of the female lead in both dramas.

Both are strong women, both the woman suffers because a family lost, both the woman is smart and work very well, both the woman built a great industry with her own efforts.

Han Ji Hye plays the main female lead in both dramas. Both dramas deal with enterprises where the president is corrupt and very powerful.