Quite similar in main aspects, FL family got downed because of problem with government and FL took over the household affair, with sweat and tear leading the family to be one of the most wealthy family. Also, ML also join in political. HOWEVER, thought NGCS is a masterpiece and very very aspiring, it's needed brain power to watch, BIA is simpler.
Both female leads are soldier and generals in war-time, brave and generous. Both male leads gave that same frivolous feeling. Reminding me of Oh my general and Mulan when I watch Fighting for Love.