It took her seniors 10 years to find Bai Lu. It turned out he was adopted by a wealthy businessman. She was happy and wanted to show herself to him, but her master didn't allow her.
He told her that getting involved with him or his adopted family would be to her disadvantage, unless she's powerful enough to swallow the whole Hua Xia kingdom.
At that time, she didn't know what he meant but after she grew her power and started to know things, she discovered that the family who adopted Bai Lu is in cohort with the enemies of Hua Xia kingdom.
At a point, she had the thought to steal him from them. Suddenly, the emperor raided their home, killed his adopted family and everyone involved in the crime of betraying the kingdom, however, Bai Lu was nowhere to be found.
The emperor left a decree with the highness of northern Wei that anywhere they spotted the young master of the traitor's family, he should be killed.