The Xi’An Empire located along the border of the Eastern Systems is comprised of at least fourteen systems. The Xi’An government has not disclosed the exact number of systems under their control but it is assumed that they have more territory deeper into space.
The Xi’An Empire is a hereditary absolute monarchy. The title of Emperor passes down through the family line. The emperor has a High Council of Advisers, each representing a facet of the government.
On each planet under Xi’An control there is a similarly structured Council that runs that world. Those Council Members report directly to their respective counterpart on the Emperor’s Council.