MC Has Kids and / or is Married from the Beginning

The leads are married to each other before episode 1 begins and they already have a daughter.

ML is divorced and has a daughter. 

FL is divorced + 1 kid.

FL is separated from her husband + daughter.

FL is a widow with daughter.

FL has kids + her marriage is falling apart.

Both leads are married and have a daughter.

ML is married (political marriage). No kids.

ML is married. 

FL is married + no kids. Her husband is arguably the ML.

At the beginning of the drama the FL is briefly in a bad marriage in the UK. Her husband is sterile and in an effort to save the marriage she undergoes a procedure to become pregnant via an anonymous sperm donor. Her husband finds out and they get divorced + the FL moves back to Shanghai.

ML is married.

ML is married.

FL gave birth to a child of a previous marriage years ago. She was tricked into believing that the child had not survived, but it had. 

ML has an adopted daughter. 

The FL and either the ML or the ML's brother (watch to find out) are married from the beginning. 

The leads are married to each other before episode 1 begins. They don't have kids. 

FL is already a widow in episode 1.