Believe in Love is a drama involves marriage aswell the guy helped the Female Lead because the Female Leads father is sick .. Another thing is that in Believe in Love it also involves an Evil mother concubine..

Both female leads in both drama are goal driven to achieve success on their own and make their own names..

Believe in Love is a very cute, sweet and beautifull drama as well that maybe you want to try..

_Both involves arrange marriage for the sake of maintaining peace in each nation/region.
_Also involves political or fight for power.

...The Case Solver II is a sequel of this drama, also it has the same characters which are the male lead and the female lead remain to be Jason Gu and Dong Xuan.. and as well as some more other characters..

Xiao Cai Mi and My Girl are similar when it comes to the ML and FL.. if you are a fan and a shipper of Zhao Yi Qin and Li Jia Qi then you might want to add this on your list.

The female leads are both the same which is Ling Mei Shi and also its similar that the female lead has a special power or some supernatural power.