Responses

It is Yi Yun's sperm I believe and I think because of the family's weird rules.
The successor is always the first son from the male line.
The successor doesn't come from the female line. Hence why she stole the sperm. If Jinyao becomes the successor then the child she has with is "Jinyao'" first son automatically makes the child the next successor after Jinyao
BUT
The Aunt said that the child is her brothers illegitimate son. So I might be wrong about this. Not sure what her plan is.
Is the sperm she used Yi yuns sperm?? Because i remember them talking about it being stolen... why didn’t she just use her husbands sperm???