Qi Genghis was a woman who didn't know what was good for her, born in a family where she has to fight for every resource with her brother, her nature was very petty, vile and selfish.
Many people sympathised with Qi Genghis for having such a family that always tried to pull her down but the Fu family wasn't one of those people. Though Qi Genghis tried very hard to hide her true self from the members of the Fu family, she couldn't do it for a long time.
Like the wise man said it was easy to lie but lying for an entire lifetime was impossible.
Qi Genghis's true nature was exposed much sooner than she anticipated and after that, the woman broke the jar completely. She was found fooling along with another man, who was much younger than Fu Yu Shen, her actions made the Fu family lose their entire four generations of face and Old master Fu was so furious that he wanted to drive Qi Genghis out of the family but Fu Yu Shen simply refuse.