Zhu-Zhu Hwai is the densely populated planet that is the home to the Umbrites. It is located in the Triangulum Galaxy and is relatively isolated. Its Gravity is about 2 times that of normal Earth gravity, and its surface has inhospitable conditions which forces the natives to live underground. It has roughly eight billion citizens that all live in elaborately constructed underground warrens. Populations in the warrens ranges from the hundreds up to the 185 million Umbrites that live in Plyx Gribnath, the Umbrite capital. Their governments are localized communes that cooperate and are very interconnected.
- Zhu is a Chinese surname.