From the introduction: Hao Jin, the legendary Ruby Phoenix, was a Tian sorcerer who walked Golarion centuries in the past. Before disappearing from the world, Hao Jin constructed her personal demiplane, now known as the Hao Jin Tapestry, where she stored the fabulous treasures she collected over her lifetime. The contents of the tapestry range from powerful magic items to priceless art pieces that were antiques even in her time. Hao Jin even plucked ancient cities and cultures from Golarion for preservation within the confines of the tapestry.