Both drama has
- smart female lead
-culture related content
- soldier male lead
-Both dramas are set in northern song dynasty
-The story of ming lan is set right after a dream of splendor and the empress dowager was the empress in a dream of splendor
-both male lead is from the Gu family
-both dramas are in the female view
-both female lead started liking the male lead slowly after him

Well, this FBJT hasn't aired yet, but according to the plot, this drama is about Liu E, the empress in the dream of splendor.
Both dramas are also set in the Song dynasty.
The emperor is also the same person.

both dramas have lawyers as the lead
both dramas have court related plot
both drama have luo jin as the cast

The eternal love is also about time traveling and the female lead is also from modern times the female lead and the female lead from the another universe swap souls everytime she hits her head