The Hadrian system is a planetary system in the United Empire of Earth (UEE) that consists of a red giant, a gas giant, a gas dwarf, an asteroid belt, and an ice giant. Formerly a part of the Perry Line, Hadrian was used as a military staging ground for the UEE due to its jump point connections with Gurzil, a developing system on the border of the Xi'an Empire. For the next two centuries, Hadrian was fortified with mines and outposts in preparation of a Xi'an attack that never came. Although it was demilitarized and reopened to civilians in 2793 at the end of the Xi'an-Human Cold War (2530 - 2793), many mines remain in the system's asteroid belt. Today, the military structures that have been declared safe have been converted into pit stops for those traveling between the UEE and the Xi'an Empire.