No Feng refers to it as an "embryo" each time he talks about it. So that would mean that it was already fertilized with Yi yuns sperm and a donated egg before the switch and then before it was stolen.
I think they mentioned earlier that she might be the one from the two who was infertile so the egg wouldn't have been hers
I was wondering why they referred to it as an embryo. THANK GOD. Thank you for explaining this to me!!! But why did she take yi yun’s embryo? It feels like she may be using the baby as a leverage against them?
No problem glad I could help. As for why she took Yi Yuns it is cause she thought it was Fengs. She has been secretly trying to get the business just as her siblings have. Her plan was that if she could get Fengs embryo then it would be "the first born" which their family always leaves the business too. By stealing it she was going to pass the baby as hers and she though she would be entitled to everything. That's also why they are going to " introduce" the baby to the family and her Grandpa. To try to show that she somehow got the first born.
As for why it was Yi yuns that she took. When she couldn't find Fengs she found out that he had messed with Yi' s in the past so she assumed that Feng had hidden his embryo under Yi yuns name in away to keep it hidden. Saddly for her it really is yi yuns and the first born is already born.
If that baby is yi yun's, does that mean the egg used is her's????? shfjshfjsfjs god please no, i hope that fucking bitch falls into a blender with unsharpened blades