Both dramas have the same FL and she is strong and powerful in both dramas.
Both MLs would die for her. Great fighting scenes, Especially in Legend of fu Yao.
Powerful MLs in both dramas. I must say the plots and costumes and set designs is better in Legend of Fu Yao. Great romantic scene in both.
( You would love it)
Great chemistry in both. ML is more playful in Legend of fu Yao while in Eternal love ML is more serious and gentle.
Both these dramas are my top favourite Chinese dramas. Master peace.

The ML acting was superb. I was especially touched by his acting abilities when he was sick. He was able to looked give you a glimpse of what a person goes through when they are faced with major sickness.
Mars in Mar the ML had some heath issues.