Bai Mengxue's father, Bai Jingyan worked inside Venus. He first entered as a wholesome employee with a bright mindset.
At first, that is. Upon being exposed to the crimes his higher ups committed, and knowing that he was going to get forever suppressed if he didn't join them, he eventually succumbed to the temptation of dirty money and joined in with the rest of the crew.
It was done not only because he feared for his career, but also because he needed money to manage his family. With the dirty money he would receive, he could work less and earn more. A perfect offer.
Thus, Xu Jiaqi also had a good amount of dirt on Bai Jingyan. Enough to put him in jail for years.
Naturally, Xu Jiaqi did not intend to purge him out right away. In fact, she was planning to keep Bai Jingyan inside the company to give him a false sense of assurance. He would see his partners in crime get thwarted out, but his turn won't come.