I think it's because both of their sperm were in the same person?? I'm not sure tho
Im not sure myself but based on my understanding, Yi wanted a child so he went abroad and hired a surrogate. However, it so happened that Fengyao also wanted to have a child and is required to conceal this from his family. So he got Yi's details (getting a surrogate) from his secretary, exchanged his sperm sample, and had Yi's surrogate to bear his son. Long story short, Rou rou is Feng's son while Yi's sperm was kept and not used instead.
Nooo rourou is biologically fengfengs son yiyi and rourou aren't blood related at all.
Yiyi's sperm was stolen and not found yet
Ooohh now i get it. Okeyyy i understand now. Thank you(▰˘◡˘▰)
If you read from the official translation on Webcomics app and original chinese raw, RouRou is actually a test tube baby not from a surrogate mother.
Really?? I didn't know that wow okey thank you
Well i am still confuse about rou rou's birth even tho they said he came from a surrogate but i dont believe it and theres this chapter too about yiyi and his (idk some part of his body i think) and it involve feng in it. Welp now i can't wait for the next chapter lets see how this will go i really hope were ganna uncover rou rou's birth im curious