Yolohy
I understand a little bit as far as Tang Yue's mother's actions. lol it makes sense it's just Gene's that need to be passed. if bloodlines mix too much then obviously most genes are gonna be lost which is probably why the family TY (tang yue) is with didnt have this ability. their snake Genes didnt have that ability like Yue and possibly her mother has. I want to learn more about Yue's family line now haha.