Yulin I is the first planet from the sun of the Yulin system, Banu Protectorate. Orbiting very close to its sun, its lithosphere has been mostly worn away after eons of exposure to stellar wind and radiation. The surface of the planet is heavily cratered, resulting from countless meteor strikes. The largest of these craters are surrounded by long, thin streaks of particles that surround their impact sites like the spokes of a wheel.