Ninth planet of Laoujin?, site of the Mother School of the Bene Gesserit. Laou Jin is the chinese name for Canopus, but as Canopus is the system of planet Arrakis, it can't be the system of Wallach IX. During some historical periods Wallach IX was known as Chapterhouse.
Wallach was one of the Synchronized Worlds under thinking machine control. It is subsequently devastated by atomics as the human forces of Butlerian Jihad systematically destroy all of the machine-controlled planets. At some point within the next 10,000 years before the events of Dune, the Bene Gesserit? assume control of the planet.
Five thousand years later than the events on planet Arrakis that put House Atreides in power, it was the primary base of operations for the Bene Gesserit. Later the planet was captured by the Honored Matres?.
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