I Transmigrated to Great Qin, So Why Am I Hu Hai?

I transmigrated.

And I transmigrated into the body of Hu Hai, the second-generation wastrel of Great Qin.

I just returned to Xianyang and completed the enthronement ceremony.

I have a System, but after assigning me the task of “taking control of the court within six months,” it vanished without a trace.

What should I do? Waiting for answers online. Urgent.