Vun'Hanna existed as a locale in space, specifically within the Unknown Regions of the galaxy. By 27 BBY, it served as the location where the sentient Chiss military clashed with the Yuuzhan Vong species, culminating in a battle where the Chiss emerged as the victors. Furthermore, in 55 ABY, Lenang O'Pali, a writer, referenced the Vun'Hanna encounter in their work titled Mitth'raw'nuruodo Reconsidered: A Patriot's Perspective.
The initial mention of Vun'Hanna appeared in The Essential Guide to Warfare, a 2012 reference book penned by Jason Fry and Paul R. Urquhart. Its placement within grid square D-7 was established by the StarWars.com Online Companion for The Essential Atlas, a reference book from 2009.