
I didn´t watched neither until the end, but it really felt similar.
-The plot is all about revenge
-We have crazy mothers and women in generel
-Both of them are alot about families and how bad they treat their children
-The Male Lead is a bit flirty with the Female Lead and kisses her forcfully sometimes
-In both the Female Lead stands behind a family member, even if they treat her like literal trash (In Fai Sin Chua it is her mother and in Hua Jai Sila her mother and sister)
-**We have a kind woman, that dies because of the mother**
-The plot is all about revenge
-We have crazy mothers and women in generel
-Both of them are alot about families and how bad they treat their children
-The Male Lead is a bit flirty with the Female Lead and kisses her forcfully sometimes
-In both the Female Lead stands behind a family member, even if they treat her like literal trash (In Fai Sin Chua it is her mother and in Hua Jai Sila her mother and sister)
-**We have a kind woman, that dies because of the mother**

I haven't watched Duang Jai Nai Fai Nhao but based on the synopsis, they have a few similarities. Both male leads want to take revenge on their family. Both male leads are rich (in Hua Jai Sila, he became rich by his own means). Both female leads want to stop the male lead from taking revenge. Both male leads use woman as a means to getting closer to seeking revenge.









The dramas are similar, a man's main year will have to decide between love and revenge. The role of Hua Jai Look Poochai is retaliating for the murder of family and friends, but in Hua Jai Sila, the male role takes revenge on the family who has trodden him in childhood because he was the adopted son of his father, a poorly born woman.

Both have gorgeous male leads, both are melodrama tear-jerkers, both have crime and action plots that are pretty solid, dark, and satisfying. The only major difference is HJS is more about the romantic relationship, and FFKD has a very strong estranged brothers and family plot. Both can get pretty dark. But imo the fl in HJS might be a pushover, I never resented her because being submissive is not wrong. But the fl in FFKD has some seriously problematic manipulative behavior.
