From Introduction: This PDF was created as a thank-you present for those who were kind enough to buy both the print and PDF versions of Yoon-Suin, my campaign setting. I hope you enjoy both it, and the original product itself. What you have here is a three-level dungeon I created for my own personal game, slightly-fleshed out. It is not quite as polished as other such products might be, but it should, I hope, be completely useable. In my personal game the dungeon can be found in an abandoned palace somewhere in the Yellow City. It can, however, be “dropped in” to a game set elsewhere – in the Hundred Kingdoms or the Mountains of the Moon, for instance – with a few tweaks. It is expected to function best as a kind of starter-dungeon or alternative to a megadungeon.